Lestari, Rissa (2013) Pengaruh Konsentrasi dan Waktu Perendaman dalam Larutan Asam Sulfat terhadap Laju Korosi Sulphuric Acid Resistance Alloyed Metal (SARAMET). Sarjana thesis, Universitas Brawijaya.
Abstract
Perkembangan di dunia industri manufaktur membuat setiap perusahan berlomba-lomba untuk mengembangkan produk mereka, bersaing menciptakan produk yang tahan korosi khususnya bagi industri kimia. Korosi adalah degradasi logam akibat reaksi dengan lingkungan. Untuk alasan inilah PT Petrokimia Gresik mengganti material yang digunakan untuk bahan baku pembuatan tangki-tangki penyimpanan asam sulfat dengan SARAMET. Sulphuric Acid Resistance Alloyed Metal (SARAMET) adalah austenitic stainless steel dengan penambahan silikon hingga 5.8%. Kandungan silikon yang tinggi inilah yang membuat SARAMET lebih tahan korosi daripada SS 304 dan SS 316 L mengingat asam sulfat adalah larutan yang sangat korosif. Penelitian ini dilakukan untuk mengetahui pengaruh konsentrasi dan waktu perendaman dalam larutan asam sulfat terhadap laju korosi Sulphuric Acid Resistance Alloyed Metal (SARAMET). Variabel bebas yang digunakan dalam penelitian ini yaitu konsentrasi asam sulfat yang divariasikan sebesar 85, 90, dan 95% dengan variasi waktu perendaman yaitu 240, 360, dan 480 jam. Variabel terikat dalam penelitian ini adalah laju korosi SARAMET dengan variabel terkontrol yaitu dimensi SARAMET yang dibuat sama untuk tiap variasi dan penelitian dilakukan pada temperatur kamar. Dari hasil penelitian didapat hasil bahwa semakin tinggi konsentrasi asam sulfat maka laju korosi akan semakin turun. Hal ini karena semakin pekat konsentrasi akan menyebabkan semakin sulit terurainya asam sulfat menjadi ion SO42- (ion sulfat). Berkurangnya ion sulfat mengindikasikan berkurangnya ion korosif yang dapat menyebabkan korosi pada logam sehingga reaksi akan terhambat atau bahkan berhenti. Semakin lama waktu perendaman didapat laju korosi SARAMET yang semakin turun. Hal ini sesuai dengan sifat stainless steel yang dapat mengalami pasifasi pada lingkungan tertentu karena adanya kandungan kromium. Dengan adanya kandungan kromium minimum 12% pada stainless steel maka secara spontan sudah terbentuk lapisan pasif Cr2O3 yang menyelimuti permukaan logam sehingga ion korosif sukar untuk masuk. Faktor lain yang dapat menyebabkan laju korosi turun yaitu karena adanya kandungan silikon yang lebih dari 1% pada SARAMET. Hal ini karena silikon dapat berfungsi sebagai deoksidator sehingga dapat meminimalisasi oksigen yang ada dalam larutan asam sulfat. Dengan berkurangnya kandungan oksigen maka akan mengurangi reaksi reduksi oksigen di katoda sehingga dapat menurunkan laju korosi.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FT/2013/237/051307603 |
| Subjects: | 600 Technology (Applied sciences) > 621 Applied physics |
| Divisions: | Fakultas Teknik > Teknik Mesin |
| Depositing User: | Hasbi |
| Date Deposited: | 01 Nov 2013 14:31 |
| Last Modified: | 21 Oct 2021 04:47 |
| URI: | http://repository.ub.ac.id/id/eprint/141956 |
![[thumbnail of Cover,_Lemper_dan_Lempeng_Skripsi.pdf]](http://repository.ub.ac.id/style/images/fileicons/text.png) |
Text
Cover,_Lemper_dan_Lempeng_Skripsi.pdf Download (1MB) |
|
Text
Pengantar-_Ringkasan.pdf Download (1MB) |
|
Text
BAB_I.pdf Download (1MB) |
|
Text
BAB_II.pdf Download (2MB) |
|
Text
BAB_III.pdf Download (2MB) |
|
Text
BAB_IV.pdf Download (2MB) |
|
Text
BAB_V.pdf Download (1MB) |
|
Text
Daftar_Pustaka.pdf Download (1MB) |
|
Text
Lampiran_1.pdf Download (1MB) |
|
Text
Lampiran_2.pdf Download (1MB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/11/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (42kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/12/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (17kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/13/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (4kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/14/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/15/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (29kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/16/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (12kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/17/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (3kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/18/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/19/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (46kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/20/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (17kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/21/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (4kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/22/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/33/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (37kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/34/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (15kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/35/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (4kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/36/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/37/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (37kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/38/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (15kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/39/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (4kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/40/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/41/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (42kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/42/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (16kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/43/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (4kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/44/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/45/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (47kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/46/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (18kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/47/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (4kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/48/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/49/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (49kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/50/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (19kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/51/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (4kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/52/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/53/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (43kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/54/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (17kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/55/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (4kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/56/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_lightbox]](http://repository.ub.ac.id/141956/57/lightbox.jpg) |
Other (Thumbnails conversion from text to thumbnail_lightbox)
lightbox.jpg Download (34kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_preview]](http://repository.ub.ac.id/141956/58/preview.jpg) |
Other (Thumbnails conversion from text to thumbnail_preview)
preview.jpg Download (14kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_medium]](http://repository.ub.ac.id/141956/59/medium.jpg) |
Other (Thumbnails conversion from text to thumbnail_medium)
medium.jpg Download (4kB) |
![[thumbnail of Thumbnails conversion from text to thumbnail_small]](http://repository.ub.ac.id/141956/60/small.jpg) |
Other (Thumbnails conversion from text to thumbnail_small)
small.jpg Download (1kB) |
Actions (login required)
 |
View Item |