JIN Zhujing YU Li YU Zhiming DAI Shaoxia XU Jiayin Institute of Corrosion and Protection of Metals
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Academia Sinica
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Corrosion Science Laboratory Academia Sinica
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Shenyang
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China
金属学报(英文版)
The composite coating of(N~++IP)-TiN was prepared by ion-plated TiN film onto ion-nitrided case on the low carbon steel substrate.The microhardness measurement along in- terface between IP-TiN coating and substrate was detected as a moderate decrease in magni- tude with increase of distance from the coating surface.This seems due to the occurrence of ion nitride case,ε-Fe_3N-Fe_2N and Fe_4N phases,along the interface.
关键词:
microhardness
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null
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null
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null
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null
陈高飞
,
公茂琼
,
邹鑫
,
吴剑峰
,
汪胜
工程热物理学报
对乙烷、丙烷纯质及三种不同浓度比例的乙烷／丙烷二元混合物在内径为8mm的水平管内进行了饱和流动沸腾传热特性的实验研究，重点分析了热流密度、质量流量的变化对二元混合工质传热系数的影响。选用了4种专用于计算混合物流动换热的关联式，并与实验数据进行了比较，其中Gungor—Winterton and Thome关联式和Zou关联式的预测偏差相对较小，且计算过程较为简单，较适合用于该工况范围的混合工质传热预测。
关键词:
流动沸腾
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乙烷
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丙烷
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传热关联式
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水平管
