【摘要】：根據(jù)萬(wàn)寧海洋大氣試驗(yàn)站近3 a的大氣環(huán)境數(shù)據(jù),采用當(dāng)量折算法,計(jì)算中性鹽霧實(shí)驗(yàn)?zāi)M萬(wàn)寧海洋大氣環(huán)境所需的折算周期。以超深沖壓冷軋板DC06和Q235鋼為實(shí)驗(yàn)材料,研究二者在中性鹽霧實(shí)驗(yàn)中的腐蝕行為,并通過(guò)灰色關(guān)聯(lián)度法,定量研究中性鹽霧加速實(shí)驗(yàn)和萬(wàn)寧海洋大氣戶外暴露實(shí)驗(yàn)的相關(guān)性。結(jié)果表明:DC06和Q235鋼中性鹽霧實(shí)驗(yàn)腐蝕動(dòng)力學(xué)曲線擬合后均符合冪函數(shù)規(guī)律;DC06和Q235鋼經(jīng)計(jì)算周期(528 h·a-1)和常用周期(480 h·a-1)中性鹽霧實(shí)驗(yàn)與萬(wàn)寧戶外大氣暴露實(shí)驗(yàn)的灰色關(guān)聯(lián)度均大于0.6,符合室內(nèi)外動(dòng)力學(xué)一致性原則;DC06和Q235鋼兩種材料在折算周期(528 h·a-1)下的灰色關(guān)聯(lián)度(0.6761,0.7383)大于常用周期(0.6029,0.6050)。
[Abstract]:Based on the atmospheric environment data of the Wanning Marine atmosphere Test Station in recent 3 years, the equivalent conversion method is used to calculate the conversion period needed for the neutral salt fog experiment to simulate the Wanning marine atmospheric environment. The corrosion behavior of DC06 and Q235 steels in neutral salt spray test was studied by using ultra-deep cold rolled sheet DC06 and Q235 steel as experimental materials. The correlation between accelerated neutral salt spray test and outdoor exposure experiment in Wanning ocean atmosphere was studied quantitatively by grey correlation method. The results show that the corrosion kinetics curves of neutral salt spray test of DC06 and Q235 steel are in accordance with the law of power function. The grey correlation degree between neutral salt spray test and Wanning outdoor atmospheric exposure test for DC06 and Q235 steel was greater than 0.6, which was consistent with the principle of indoor and outdoor kinetics consistency. The calculated period (528ha-1) and the usual period (480ha-1) of DC06 and Q235 steel were higher than 0.6. The grey correlation degree of DC06 and Q235 steel under the conversion period (528ha-1) is higher than that of the usual period (0.60290.6050).
【作者單位】： 北京科技大學(xué)腐蝕與防護(hù)中心;北京科技大學(xué)腐蝕與防護(hù)教育部重點(diǎn)實(shí)驗(yàn)室;
【分類(lèi)號(hào)】：TG172.3

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