發(fā)布時(shí)間：2018-01-20 19:51

  本文關(guān)鍵詞： 上甲板 低合金鋼 腐蝕速率 腐蝕產(chǎn)物 單質(zhì)硫　出處：《材料熱處理學(xué)報(bào)》2017年01期 　論文類型：期刊論文

【摘要】：采用模擬油輪貨油艙上甲板環(huán)境的腐蝕實(shí)驗(yàn)裝置,研究了低合金船體鋼在模擬防爆氣體(SO_2+CO_2+O_2+N_2)氣、模擬原油揮發(fā)氣體(H_2S+N_2)以及兩者混合存在條件下的腐蝕行為差異。分別研究了實(shí)驗(yàn)鋼在不同氣體中腐蝕速率、基體腐蝕形貌、腐蝕產(chǎn)物的形貌及物相組成。結(jié)果表明,模擬防爆氣體SO_2+CO_2+O_2+N_2造成的腐蝕量遠(yuǎn)大于模擬原油揮發(fā)氣體H_2S+N_2,其在整個(gè)上甲板腐蝕過程中占主導(dǎo)地位。在H_2S+N_2氣體中實(shí)驗(yàn)鋼的腐蝕產(chǎn)物為單一的FeS,在SO_2+CO_2+O_2+N_2環(huán)境下腐蝕產(chǎn)物為α-FeOOH、Fe_2O_3、FeSO_4,而在兩種氣源混合通入條件下,銹層中除了上述產(chǎn)物外,含有10%的單質(zhì)硫,表面光滑的塊狀單質(zhì)硫大量分布于銹層的剝離面上,能夠促進(jìn)銹層發(fā)生剝離。
[Abstract]:In this paper, the corrosion test device for simulating the upper deck environment of tanker cargo tank is used to study the gas of low alloy hull steel in simulating explosion proof gas so _ 2 CO_2 _ O _ 2N _ 2. The corrosion behavior of the experimental steel in different gases was studied. The corrosion rate of the steel and the corrosion morphology of the substrate were studied. The results show that the corrosion volume caused by the simulated explosion-proof gas SO_2 CO_2 O _ 2N _ 2 is much larger than that caused by simulated crude oil volatile gas H _ 2S N _ 2. The corrosion product of the experimental steel in H2S NSC2 gas is a single FeS. In SO_2 CO_2 O _ 2N _ 2 environment, the corrosion product is 偽 -FeOOH / Fe2O3FeSO4, and under the condition of mixing the two gas sources. In addition to the above products, the rusty layer contains 10% of elemental sulfur, and the smooth massive bulk sulfur distributes on the exfoliation surface of the rust layer, which can promote the exfoliation of the rust layer.
【作者單位】： 鋼鐵研究總院工程用鋼所;
【基金】：工信部“基于IMO標(biāo)準(zhǔn)的船用耐蝕鋼應(yīng)用技術(shù)研究”項(xiàng)目資助(工信部裝〔2014〕162號(hào))
【分類號(hào)】：U672.72;TG172
【正文快照】： 隨著原油消費(fèi)量逐年增長,原油海上運(yùn)輸量也隨之逐年增大,以我國為例,進(jìn)口原油中90%以上依賴海上運(yùn)輸[1],因而原油海上運(yùn)輸?shù)陌踩珕栴}越來越受到重視。在造成油船海損和海上原油泄漏的眾多因素中,船體材料的腐蝕、尤其是貨油艙的腐蝕是其中的重要因素[2],因此貨油艙的腐蝕愈加，

本文編號(hào)：1449315