材料期刊网，材料期刊，材料类期刊，材料期刊投稿

Effect of External Forced Flow and Boiling Film on Heat Transfer of AISI 4140 Steel Horizontal Rod During Direct Quenching

A H Meysami , R Ghasemzadeh , S H Seyedein , M R Aboutalebi

The effects of rod falling and moving, external flow field, boiling film and radiation were investigated on fluid flow and heat transfer of AISI 4140 steel horizontal rod during direct quenching by mathematical modeling. The flow field and heat transfer in quenching tank were simulated by computatio...

关键词: direct quenching , AISI 4140 , moving object , heat transfer modeling

EFFECT OF OXYGEN CONTENTS ON OXYGEN POTENTIALS OF H_2O-H_2 AND H_2O-H_2-INERTS GAS MIXTURES

FANG Zheng CHEN Xinmin(H.M.Chen) Central South University of Technology , Changsha , China FANG Zheng , Associate Professor , Department of Chemistry , Central South University of Technology , Changsha , China

金属学报(英文版)

By taking the effect of oxygen contents into account,a new set of formulae which represents the oxygen potentials of H_2O-H_2 and H_2O-H_2-inerts gas mixtures has been derived.Classi- cal representation is only a particular case of it.Som...

关键词: gas equilibration method , null , null , null

Ferromagnetism and superparamagnetism of ZnCoO : H nanocrystals

Applied Physics Letters

ZnCoO:H nanocrystals are weak ferromagnetic at room temperature with a small coercivity and a small remanence, whereas ZnCoO nanocrystals are paramagnetic. The thermal irreversibility of zero-field cooling and field cooling magnetizations of ZnCoO:

关键词: magnetic semiconductors;zno;hydrogen;cobalt

H+4, H+5和H+7团簇离子的测量和确认

杨百方 , 缪竞威 , 杨朝文 , 师勉恭

原子核物理评论 doi:10.3969/j.issn.1007-4627.2002.z1.038

报告了H+4, H+5, H+7等团簇离子的测量结果. 确认可以由...

关键词: H+4团簇离子 , H+5团簇离子 , H+7团簇离子

H型钢裂纹成因分析

王硕明 , 丁志军 , 于恒 , 张彩军

钢铁钒钛

研究了某H型钢厂采用半敞开方式浇注的H型钢腹板裂纹产生的原因.在该厂选取了26块有代表性裂纹的试样进行了细致的研究,研究认为:H...

关键词: H型钢 , 裂纹 , 夹杂物 , 数学模拟

国内热轧H型钢工艺特点

徐峰 , 何彩红 , 徐勇

钢铁研究

简述了国内H型钢的发展现状,通过列举国内典型H型钢生产线,介绍分析了轧制H型钢的1-3-1、1-3和连轧三种工艺布...

关键词: H型钢 , 生产工艺 , 万能轧机

INVESTIGATION ON DEPOSITIONS AND HARDNESS CHARACTERISTICS OF a SiC:H FILMS

X.F.Rong and Z.Y.Qin College of Mechanical Engineering , Taiyuan University of Technology , Taiyuan 030024 , China

金属学报(英文版)

In this paper, a deposition feature of a SiC:H films deposited by a RF sputtering system and a effect on the hardness of the films with various deposition conditions are investigated, and the effects of the silicon on a C:H are studie...

关键词: a SiC:H film , null , null