HomeAbout JournalEditorial BoardSubscriptionsContacts UsCHINESE
Home >> MagazineArticle
Author:HANLiqin YANGMeijun SHENQiang ZHANGLianmeng(StateK… WuhanUniversityofTec… Wuhan430070 China) 
Keyword:magnesium silicide spark plasma sintering reaction sintering thermoelectric material 
Year,volume(Issue):page number:2008,36(3):337-340

Magnesium silicide (Mg2Si) is one kind of narrow-band-gap n-type semiconductor, and is a promising environmentally friendly thermoelectric material because of its high electrical conductivity and low thermal conductivity, and also because it is non-toxic and non-polluting. High-purity magnesium (Mg) and silicon (Si) powders were selected as the raw materials, and fabrication of the Mg2Si thermoelectric material was systematically explored using the spark plasma sintering technique. The densities of the specimens were tested, and the phases and microstructures of the specimen were analyzed by X-ray diffraction and field emission scanning electron microscope, respectively. The results show that the synthesis temperature for Mg and Si is 823 K, 30 min and excessive content of Mg is helpful for obtaining pure Mg2Si. The relative density can reach 97% when the sample is prepared under the conditions of 823 K, 250 MPa, 30 min, but cracks were found on the surface of the sample. The sample was prepared under the conditions of 823 K, 6 MPa, 10 min, and then re-sintering at 1 023 K, 20 MPa, 10 min Mg2Si bulk with fine structure and relative density of 98% was obtained.

women want men signs of unfaithful husband how do i know if my wife cheated
my husband cheated on me redirect women who cheat on husband
cialis discount coupons coupons for cialis 2016 cialis 2015 coupon
Foundation item:
About The Author:
how to cheat women who want to cheat wife cheat story
my wife cheated on me now what i dream my husband cheated on me husband cheat
bystolic copay card click bystolic coupon voucher

[1]厉英,王淑兰,张大勇,等.热电材料的研究现状及发展[J].材料导报,2005,l9(9):23-25.LI Ying,WANG Shulan,ZHANG Dayong,et al.Mater Rev(in Chi-nese),2005,l9(9):23-25. [2]GERALD,MBRIAN S,JEFF S.Thermoelectric materials:new ap-proaches to an old problem[J].Phys Today,1997,50(2):42. [3]RTFFEL M,SCHILZ J.Mechanical alloying of Mg2Si[J].Scripta Metallurgical et Materialia,1995,32(12):1951-1956. [4]YOSHINAGA M,IIDA T,NODA M,et al.Bulk crystal growth of Mg2Si by the vertical Bridgman method[J].Thin Solid Films,2004,461:86-89. [5]TATSUOKA H,TAKAGIi N,OKAYA S,et al.Microstructures of semiconducting silicide layers grown by novel growth techniques[J].Thin Solid Films,2004,461:57-62. [6]FORMMEYER G,BEER S,OLDENBURG K.Microstructure and mechanical properties of mechanically alloyed intermetallic Mg2Si/Al alloys[J].Z Metallkd,1994,(85):372-376. [7]KAJIKAWA T,SHIDA K,SUQIHARA S,et a1.Thermoelectric pro-perties of magnesium silicide processed powdered elements plasma ac-tivated sintering method[A].//Proceedings of16th International Con-ference on Thermoelectrics[C].Dresden:IEEE,1997:275-278. [8]EMOTO T,AKASAKA M,ITDA T,et al.Characterzation of oxide-incorporated n-type Mg2Si prepared by a spark plasma sintering method[A].//Proceedings of25th International Conference on Thermoelectrics[C].Vienna:IEEE,2006:552-555. [9]姜洪义,龙海山,张联盟.用低温固相反应制备p型Mg2Si基热电材料[J].硅酸盐学报,2004,32(9):1094-1097.JIANG Hongyi,LONG Haishan,ZHANG Lianmeng.Chin Ceram Soc(in Chinese),2004,32(9):1094-1097. [10]RIFFEL M,SCHILZ J.Influence of Production parameters on the thermoelectric properties of Mg2Si[A].//Proceedings of16th Interna-tional Conference on Thermoelectrics[C].Dresden:IEEE,1997:283-286. [11]熊伟,秦晓英,王莉.纳米晶Mg2Si金属间化合物块体材料的制备及微结构表征[J].中国有色金属学报,2005,15(3):380-385.XIONG Wei,QIN Xiaoying,WANG Li.Chin J Nonferr Met(in Chi-nese),2005,15(3):380-385.

how to cheat women who want to cheat wife cheat story
why women cheat on husbands link link
online women that cheat with married men married woman looking to cheat
Service and feedback:
Article download】【Add to Wishlist
Editorial Department of Journal of the Chinese Ceramic Society
Address: No.11 Sanlihe Road, Beijing, China    P.C.:100831