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A compact route for efficient production of high-purity β-Ga_(2)O_(3) powder: 《Rare Metals》2024年第9期4573-4584,共12页Xiao-Wei Zhou Gao-Jie Chen Liang Xu Zhi-Jun Shao Cheng Yang Yong-Pan Tian Zhuo Zhao; supported by the National Natural Science Foundation of China(No.51904003);the Key Research and Development Plan of Anhui Province(No.2022n07020004);the Natural Science Foundation of Anhui Province(Nos.2308085ME156 and 2108085J26);Anhui Provincial Department of Education(No.2022AH050332)。; The present study has proposed a compact process for the production of high-purity β-Ga_(2)O_(3)powder by simply using gallium metal and water as the raw materials.The process basically consists of two essential step...; 关键词：β-Ga_(2)O_(3) Hydrothermal synthesis CALCINATION PURITY Reaction mechanism

Impurities analysis of high-purity osmium target for M-cathode application: 《Rare Metals》2023年第4期1154-1159,共6页Jun-Da Ma Yang Xia Yuan-Feng Xie Chao Zhang; financially supported by the Key R&D Program of Ministry of Science and Technology(No.2017YFB0305400)。; Impurities and their distributions in osmium targets for M-type cathodes affect the coating quality on porous tungsten and cathode emission performance.Glow discharge mass spectrometry(GDMS)and X-ray photoelectron spe...; 关键词：OSMIUM IMPURITIES PURITY

Preparation of high-purity tellurium powder by hydrometallurgical method被引量：8: 《Rare Metals》2014年第4期479-484,共6页Yuan Liu Ya-Jie Zheng Zhao-Ming Sun; financially supported by the Science and Technology Department of Guangdong Province(No.2011B0508000033); This hydrometallurgical method consists of oxidation leaching, sulfide impurities removing, and sulfur dioxide reduction. The crude tellurium powder was treated by H2Oa oxidation for 2.0 h at pH 2.5 when adding 50 ml ...; 关键词：High purity Tellurium powder Hydrometallurgical method

Recovery of high-purity Pt from Pt-Au bimetallic nanoparticles using organic aqua regia被引量：1: 《Rare Metals》2012年第1期92-95,共4页LIN Wei School of Materials Science & Engineering,Georgia Institute of Technology,Atlanta,Georgia,30332,USA; Using organic aqua regia,a recently discovered powerful organic leaching agent,an effective process of recovering Pt directly from Pt-Au bimetallic nanoparticles was demonstrated.The purities of the Pt recovered from ...; 关键词：organic aqua regia BIMETALLIC platinum gold nanoparticle RECOVERY

Study of ultrahigh-purity copper billets refined by vacuum melting and directional solidification被引量：6: 《Rare Metals》2011年第3期304-309,共6页FU Yabo CHEN Jie LIU Ning LU Yiping LI Tingju YIN Guomao; The purpose of this paper is to study large-sized copper billets refined with 5N ultrahigh purity after vacuum melting and directional solidifi-cation （VMDS）. The precise impurity analysis of copper billets was carr...; 关键词：COPPER REFINING vacuum melting directional solidification electrical conductivity

Simultaneous determination of some trace metal impurities in high-purity sodium tungstate using coprecipitation and inductively coupled plasma atomic emission spectrometry被引量：3: 《Rare Metals》2004年第3期193-196,共4页MAXiaoguo KUANGTongchun LIUQianjun; A method based on the combination of coprecipitation with inductively coupledplasma atomic emission spectrometry (ICP-AES) was developed for the determination of impurities inhigh-purity sodium tungstate. Six elements...; 关键词：analytical chemistry trace metal determination inductively coupled plasmaatomic emission spectrometry (ICP-AES) coprecipitation sodium tungstate

Preparation　of　High－purity　Sodium　Tungstate　from　Low－grade　Tung－sten－concentrate　with　a　High　Content　of　Calcium　and　Other　Impurities: 《Rare Metals》1996年第2期116-122,共7页孙培梅陈洲溪李洪桂李运姣梁永堂陈树翘; A new technological process for production of talium tungstate from low-grade tungsten-concentrate witha high content of calcium and other impurities has been studied. The experiments showed that average tungstenleach...; 关键词：Low-grade tungsten-concentrate Mechanical activating causticdecomposition Ion exchange High-purity sodium tungstate

Erratum:Atomic Emission Spectrographic Analysis of High-purity Gallium with Prior Partial Dissolution of Matrix [RARE METALS,11(1992),No.2,129,130]被引量：1: 《Rare Metals》1992年第3期227-227,共1页Chen Jiaying Zhong Xiuxia General Research Institute for Non-ferrous Metals,Beijing 100088 Liang Shuquan Institute of Chemistry,Academia Sinica,Beijing 100080; (1)The correct writting of the fifth line in Abstract is as follows:the relative standard devia-tions for determined impurities over a range of n·10～n·10% are 4.3～12%.(2)The correct writting of Table 1 in right c...; 关键词：Erratum No.2 129 130

Present Situation and Prospects of High-purity Elements in China: 《Rare Metals》1992年第3期228-231,共4页Zhang Weihuo Emei Semiconductor Material Research Institute.Emei 614200,China; 1.IntroductionHigh-purity elements are the basic materials in electronics,communication,aerospace,atomicenergy and semiconductor material industries.Its development is a decisive factor for high-tech in-dustries.The ...; 关键词：high CDTE In GAAS Present Situation and Prospects of High-purity Elements in China

Atomic Emission Spectrographic Analysis of High-purity Gallium with Prior Partial Dissolution of Matrix: 《Rare Metals》1992年第2期129-134,共6页陈家英钟秀霞梁树权; An improved method has been developed for enriching and determining trace In,Pt,Sn,Co,Hg,Pb,Ni, Bi,Pd,Cu and Ag in high-purity gallium.Sample was treated by PDM(partial dissolution of matrix)with HCl(11mol/L)-HNO_3(0....; 关键词：High-purity gallium Trace elements Atomic emission spectroscopy

HIGH-PURITY