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Preparation of high purity boric acid and its influencing factors GONG Dian-ting1, LI Feng-hua2, FAN Zhan-guo2, JIANG Tao2 (1. Vocational Technology College, Liaoning Shihua University, Fushun 113001, China; 2. School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China) Abstract:Boric acid with high purity of 99.99% was prepared from borax with modified traditional......
Influence of Widening on the Rolling and Recrystallization Texture in High Purity Al with Initial Cube Texture毛卫民摘 要:<正> The influence of widening and initial Cube tex-ture on formation of rolling and recrystallizationtexture was investigated in high purity Al.With in-creasing widening the initial Cube texture has ro-tated more around rolling......
, China 3) Department of Mechanical Engineering, University of South Florida, Tampa FL 33620, USA摘 要:Ultra-fine-grained commercial purity aluminum... of annealed 0.6 μm ultra-fine grained aluminum increased by 67% from 24 to 40 HV. Many 0.3 μm sub-grains appeared at the shock wave center after a single pass laser shock, while high density......
have a relatively high electrical conductivity, for those self-passiviation metals covered with semiconductive protective films, AFM is the more suitable choice for corrosion studies. Aluminum...). The purity of the sample is 99.9%, and there are still 0.1% impurities which may influence the corrosion behavior. Cu and Fe are common impurities in pure aluminum, so Cu in corrosion product comes from......
with a control unit and a HAS-2 high velocity arc spraying gun. 321 stainless steel wire (chemical compositions listed in Table 1) and aluminum wire (99.8% purity) with 2 mm in diameter were selected... (321/Al coating) was prepared by high velocity arc spraying technique (HVAS) with 321 stainless steel wire as the anode and aluminum wire as the cathode. The traditional 321 stainless steel coating......
pH variation mechanism of high sulfur-containing bauxiteCHEN Xing-hua(陈兴华)1, 2, HU Yue-hua(胡岳华)1, LI Wang-xing(李旺兴)2, CHEN Xiang-qing(陈湘清)2, CAO Xue-feng(曹学锋)1(1. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;2. Aluminum Corporation of China Limited, Beijing 100082, China)Abstract:In order to fundamentally solve the acidification problem......
; 1 Introduction The properties of aluminum, chiefly high strength and light mass, make... Portevin-Le Chatelier effect in Al-Zn-Mg-Cu-Zr aluminum alloy CHEN Jun-zhou(陈军洲)1, 2, ZHEN Liang(甄良)1, FAN Li-wei(樊立伟)3, YANG Shou-jie(杨守杰)2, DAI Sheng-long(戴圣龙)2, SHAO Wen-zhu(邵文柱)1......
that aluminum material passes through the deformation zone in industrial processing such as high speed rolling, drawing and cutting. As a result, apart from the fundamental problem of whether a given metal... from cold rolling sheet of aluminum alloy 1145 along the rolling direction into 35 mm×20 mm×1.2 mm(length×width×high) slabs, were cleaned twice or three times with the analytic reagent petroleum aether......
:A Thermal oxidation behavior of commercial purity titanium at high temperature LI Xu1, 4, PENG Xiao-yan1, 4, DUAN Yu-lu1, 4, ZHANG Lü-guo2, ZHAO Yi-rong2, WANG Xue-wen3, XU Guo-fu1, 4 (1. School of Materials... purity titanium; oxidation film; high temperature oxidation; diffusion mechanism 工业纯钛是含有少量碳,氮,氧,铁和其他杂质的α-Ti合金,具有优异的耐蚀性,良好的力学性能和焊接性能,可以作为重要的耐蚀结构材料,广泛用于化工设备,滨海发电装置,海水淡化装置和舰艇零部件[1].常温下,工业纯钛在空气中能自发形成极薄的致......
conductivity of cement mortar is basically under 1.0 W/(m·K), thus a certain proportion of heat-conducting powder is necessarily added to promote the heat-conducting property. High-purity quartz sand has... of high purity quartz sand and river sand are included as fine aggregates, and Fe2O3 powder is involved to increase its heat-conducting property. Simulated surrounding rock of roadway is shown in Fig......
