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the diffusion rate of the ions produced in the etching processes and decrease the etching rates. DATTA and HARRIS[36] added chrohydric acid (HCl), kalium chloride (KCl) and sodium chloride (NaCl... with increasing concentration. PENG et al[65] concluded etch rate was not solely depended on etchant concentrations. For hydrofluoric-acid-based (HF) etching of various types of silicon dioxide......
Quantiflcational Etching of AAO TemplateGuojun SONG, Dong CHEN, Zhi PENG, Xilin SHE, Jianjiang LI and Ping HAN Institute of Polymer Materials, Qingdao University, Qingdao 266071, China摘 要:acid and chromic acid (6 wt pct H3PO4: 1.8 wt pct H3CrO4). The images of Ni nanowire......
Surface tuning of LaCoO3 perovskite by acid etching to enhance its catalytic performanceLu Dai1,Xin-Bo Lu1,Guo-Hai Chu1,Cheng-Huan He2,Wang-Cheng Zhan2,Guo-Jun Zhou11. China Tobacco Zhejiang... spectroscopy(XPS).It was found that nitric acid etching did not change the crystal structure and the overall morphology of the LaCoO3 catalyst,but it can cause the exposure of B-site Co metal to the surface......
An in Vitro Investigation of Acid Etching Treatment Prior to Post and Core Cementation and Teeth Fracture Resistance马晓妮1,2,GAO Xueping3,SUN Baiyu1,2,HOU Xiujuan4,高旭1,2,徐欣1,21. School of Stomatology... resistance of endodontically treated teeth restored with cast post and core with two kinds of surface treatment technology and acid etching preparation on the dentinal surface. Sixty-four recently extracted......
Dislocation of Cz-sapphire substrate for GaN growth by chemical etching method NIU Xin-huan(牛新环) 1, LU Guo-qi(卢国起)2, ZHANG Wei-lian(张维连)2, GAO Jin-yong(高金雍)1,LIU Yu-ling(刘玉岭)1 1. School... alkali slurry with SiO2 abrasive. After obtaining the smooth surfaces, the chemical etching experiments were processed by using fused KOH and NaOH etchants at different temperature for different times......
="ChDivSummary" name="ChDivSummary">The thin, long length and high smoothness silica photonic nanowires and taper optical fiber were fabricated using a simple and low cost chemical etching method. A two-steps wet etch process were used consisting of etching with 30% HF acid to remove cladding and 24% HF acid to decrease fiber core diameter. An approach for on-line monitoring of etching using 1300 nm......
Effect of Pd ions in the chemical etching solutionGuixiang Wang1,2), Ning Li1), and Deyu Li1) 1) Applied Chemistry Department, Harbin Institute of Technology, Harbin 150001, China 2) College... by dipping it into chromic acid-sulfuric acid containing a trace amount of palladium. The surface roughness, activity, and valence bond were characterized by atomic force microscopy (AFM) and X-ray......
146.2; O 77 文献标识码: A Influence of surface indices of high purity aluminum crystals on initiation process of pit etching LI Dong1, MAO Wei-min1, 2 (1... and Technology Beijing, Beijing 100083, China) Abstract: The solution containing hydrochloric acid, nitric acid and hydrofluoric acid was used to etch the {100} and {124} surfaces of single crystal which......
Etching Study of SiC Wafers Wang Yingmin1,Li Juan1,Jiang Minhua1,Chen Xiufang1,Xu Xiangang1,Hu Xiaobo1 (1.State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China) Abstract:SiC substrates grown by the sublimation method still have high densities of structural defects such as dislocations, micropipes, low-angle grain boundaries, macrodefects and polytypes. Wet etching......
Applications of carbonic acid solution for developing conversion coatings on Mg alloy YU Bing-lung(余秉隆), LIN Jun-kai(林俊凱), UAN Jun-yen(汪俊延) Department of Materials Science and Engineering...-hydrotalcite (Mg6Al2(OH)16CO3·4H2O) layer and/or calcium carbonate (CaCO3) layer on Mg alloy in a carbonic acid solution system (aqueous HCO3-/CO32- or Ca2+/HCO3-) at 50 ?C were reviewed. Conversion......
