1) dehydration embrittlement
脱水脆化
2) water embrittlement
水脆化
1.
Tensile strength and elongation of austempered ductile iron (ADI) were considerably reduced,resulting in remarkable water embrittlement under water adhesion condition.
水附着拉伸试验中,试样表面附着的水在试样塑性变形时分解出氢使奥贝球铁(ADI)产生氢脆,抗拉强度和伸长率显著下降,发生明显的水脆化现象。
2.
Influence of austempering temperature on water embrittlement behavior of austempered ductile iron (ADI) was studied.
研究了等温淬火温度对奥贝球铁 (ADI)水脆化行为的影响 ,水附着条件下不同等温淬火温度处理的ADI均发生水脆化行为 ,抗拉强度和伸长率显著降低 ;但随着等温淬火温度升高 ,ADI的水脆化程度降低。
3.
The result showed that both tensile strength and elongation of austempered ductile iron(ADI), pearlitic and quenched－ tempered ductile iron decreased drastically in condition of contact with water during tensile testing,exhibting remarkable water embrittlement of these materials.
研究了水附着对不同基体组织球铁的拉伸性能的影响，结果表明，水附着拉伸试验中，奥贝球铁、珠光体球铁、淬火回火球铁的拉伸强度和伸长率同时下降，发生显著的水脆化；而铁素体球铁几乎无水脆化现象 。
3) de embrittlement
脱脆
4) catalytic dehydration
催化脱水
1.
The catalytic dehydration of ethanol to ethylene on a γ-Al2O3 catalyst in a fixed bed reactor has been studied.
考察了低浓度乙醇在固定床管式反应器中活性氧化铝上催化脱水生成乙烯的反应行为。
2.
Lemonile was obtained by the catalytic dehydration of citraloxime under KOH-Al 2O 3 carrier -base.
从柠檬醛与盐酸羟胺反应制备柠檬肟，后者在１１０～１１２℃温度下经ＫＯＨ－Ａｌ２Ｏ３催化脱水生成柠檬腈，柠檬腈的合成产率为６８％。
3.
Catalytic dehydration in the condensation of acetone-mannitol is investigated with several cation-exchanging resins of strong acid type as the catalysts.
探讨了若干种强酸性阳离子交换树脂在丙酮与甘露醇缩合反应中的催化脱水作用;根据反应原理,从结构上分析了催化剂对不同缩合产物的影响;初步讨论了反应温度及催化剂用量对催化效果的影响。
5) cyclodehydration
[,saiklədi:hai'dreiʃen]
脱水环化
1.
The catalytic performance of mineral acids for the synthesis of 1 , 4-dioxane by cyclodehydration of DEG was studied.
考察了无机酸对二甘醇(DEG)脱水环化制备1,4-二氧六环(DOX)反应的催化效果。
6) cyclodehydration
[,saiklədi:hai'dreiʃen]
环化脱水
1.
As to the supported catalysts of silicotungstic acid (HWSi) for cyclodehydration of 1,4-butancdiol to prepare tetrahyfrofuran, the effects of the kinds of carriers, the acidities, the acid contents and the combination ability between HWSi and supporters were investigated.
研究了负载型硅钨酸催化剂的载体种类、酸强度、酸量、硅钨酸与载体的结合能力对其催化1,4-丁二醇环化脱水制备四氢呋喃的影响。
2.
The method of liquid phase synthesis of dioxane from the cyclodehydration of diethylene glycol catalyzed by ASP-type solid acidic catalysts was studied.
研究了ASP型固体酸催化剂一缩乙二醇(二甘醇)环化脱水合成1,4-二氧六环的液相反应。
补充资料：共沸脱水磺化
分子式：
CAS号：
性质：工业上简称气相磺化。用过量的过热芳烃蒸气通入120～180℃浓硫酸中，由于共沸，使未反应的芳烃蒸气带出磺化反应生成的水，使磺化剂的浓度不致于下降太多，有利于磺化反应的继续进行。是提高硫酸利用率的一种好方法。芳烃蒸气与水蒸气的混合物经冷凝分离后可回收芳烃，循环使用。这种磺化方法只适用于沸点较低、易挥发的芳烃，如苯、甲苯的磺化。
CAS号：
性质：工业上简称气相磺化。用过量的过热芳烃蒸气通入120～180℃浓硫酸中，由于共沸，使未反应的芳烃蒸气带出磺化反应生成的水，使磺化剂的浓度不致于下降太多，有利于磺化反应的继续进行。是提高硫酸利用率的一种好方法。芳烃蒸气与水蒸气的混合物经冷凝分离后可回收芳烃，循环使用。这种磺化方法只适用于沸点较低、易挥发的芳烃，如苯、甲苯的磺化。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条