| Home | E-Submission/Review | Sitemap | Editorial Office |  
top_img
Current Issue > Current Issue



Table of Contents | September, 2019  Vol. 57   No.9 Previous Issue | Next Issue | Archive
In this issue:

Research Papers
555 Evaluation of Dynamic Precipitation in Extruded Mg-Zn Alloy
Mg-Zn합금의 압출 공정 중 동적 석출 거동에 대한 고찰
Guang Zhe Li, Min Young Na, Hye Jung Chang, Pil Ryung Cha, Yu Chan Kim, Hyun Kwang Seok
이광철, 나민영, 장혜정, 차필령, 김유찬, 석현광
Korean J. Met. Mater. 2019;57(9):555-561.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.555

Abstract
The dynamic precipitation evolution of Mg-3 wt% Zn alloy during extrusion was evaluated in this study. Precipitation evolution during aging has been well investigated for the Mg-Zn alloy, which is known as static precipitation. However, little attention has been given to dynamic precipitation in Mg-Zn alloy. In order to evaluate..... More

                        
562 Effect of Annealing Temperature on the Shape Memory Properties of Ti-44.5Ni-5Cu and Ti-45.2Ni-5Cu(at%) Alloys
Ti-44.5Ni-5Cu 및 Ti-45.2Ni-5Cu(at%) 합금의 형상기억특성에 미치는 어닐링온도의 영향
Jae Il Kim, Kwang Sun Hwang
김재일, 황광선
Korean J. Met. Mater. 2019;57(9):562-568.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.562

Abstract
The effect of annealing temperature on shape memory properties in the Ti-44.5Ni-5Cu and Ti-45.2Ni-5Cu(at%) alloys was investigated by differential scanning calorimeter (DSC) and tensile testing. The martensitic transformation temperature of Ti-44.5Ni-5Cu(at%) increased from 308K to 324K with increasing annealing temperature and did not change with further increasing annealing temperature. This..... More

                        
569 Eco-Friendly Pretreatment of Titanium Turning Scraps and Subsequent Preparation of Ferro-Titanium Ingots
Jikwang Chae, Jung-Min Oh, Suhwan Yoo, Jae-Won Lim
Korean J. Met. Mater. 2019;57(9):569-574.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.569

Abstract
In this study, an eco-friendly pretreatment process was developed to recycle titanium turning scraps and ferro-titanium ingots with low gaseous impurities were prepared using recycled titanium turning scraps. The amount of gaseous impurities of titanium scraps before removing the machining oils on the surface was as high as 20000 ppm...... More

                        
575 High-Temperature Oxidation of Fe-12Cr-0.3C-4Mn-(13-15)Cu Composite Alloys
Min Jung Kim, Sang-Hwan Bak, Junhee Hahn, Seon Jin Kim, Dong Bok Lee
Korean J. Met. Mater. 2019;57(9):575-581.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.575

Abstract
Alloys of Fe-12Cr-0.3C-4Mn-(13, 14, 15)Cu (wt%) were cast using an induction furnace. They were structurally heterogeneous composites that consisted of a relatively stiff α-Fe matrix and a soft (Cu, Mn)-rich secondary phase. They were developed as self-lubricating, wear-resistant metals. Since the formation of oxides plays an important role in wear,..... More

                        
582 Optimization of the CMP Process with Colloidal Silica Performance for Bulk AlN Single Crystal Substrate
Hyo Sang Kang, Joo Hyung Lee, Jae Hwa Park, Hee Ae Lee, Won Il Park, Seung Min Kang, Sung Chul Yi
Korean J. Met. Mater. 2019;57(9):582-588.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.582

Abstract
Chemical mechanical polishing (CMP) of bulk AlN was performed with colloidal silica slurry at pH 9 for different times. The result shows that colloidal silica slurry at pH 9, which has the relatively high surface charge of -50.7 mV is most stable, and it was selected as chemically optimum condition..... More

                        
589 Adsorption of Pd(II) onto Zr(IV) Based Metal-Organic Framework UIO-66-NH2 from Hydrochloric Acid Solution
염산 용액에서 지르코늄(IV)계 금속-유기물 구조체 UIO-66-NH2의 팔라듐(II) 흡착
Hyeong Hun Ahn, Man Seung Lee
안형훈, 이만승
Korean J. Met. Mater. 2019;57(9):589-595.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.589

Abstract
Metal-organic frameworks are used in many applications, such as gas separation, catalysis, and the synthesis of nanomaterials. Metal-organic frameworks show superior stability at high temperature, which makes them potentially useful for the adsorption of metal ions from leaching solutions at high temperature. In this work, UIO-66-NH2, a zirconium(IV) based metal-organic..... More

                        
596 Selective Extraction of Cu(II) from Sulfuric Acid Leaching Solutions of Spent Lithium Ion Batteries Using Cyanex 301
폐리튬 이차전지 황산침출용액에서 Cyanex 301에 의한 구리(II)의 선택적 추출
Se Ah Lee, Man Seung Lee
이세아, 이만승
Korean J. Met. Mater. 2019;57(9):596-602.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.596

Abstract
Spent lithium ion batteries contain cobalt, copper, lithium, manganese and nickel. Recovery of these metals with high purity from spent lithium ion batteries is of importance. A sulfuric acid solution is generally employed for the treatment of spent lithium ion batteries, but it is difficult to separate these metal ions..... More

                        
603 Thermoelectric Transport Properties of Interface-Controlled n-type Bismuth Telluride Selenide Composites by Reduced Graphene Oxide
환원 그래핀 산화물을 이용하여 계면제어된 n형 Bismuth Telluride Selenide 복합체의 열전수송특성에 대한 연구
Ui Gyeong Hwang, Young Soo Lim
황의경, 임영수
Korean J. Met. Mater. 2019;57(9):603-608.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.603

Abstract
We report the effect of interface control using reduced graphene oxide (RGO) on the thermoelectric transport properties of Bi2Te2.7Se0.3 (BTS)-RGO composites. The interface-controlled BTS-RGO composites were prepared by the consolidation of BTS-RGO hybrid powders using spark plasma sintering (SPS). The RGO-hybridization reduced the grain size in the BTS-RGO composites because..... More

                        
609 Up- and Downconversion Luminescence in Ho3+,Yb3+-Co-Doped Y2O3 Transparent Ceramics Prepared by Spark Plasma Sintering
Cheol Woo Park, Jun Hyeong In, Jae Hwa Park, Kwang Bo Shim, Jeong Ho Ryu
Korean J. Met. Mater. 2019;57(9):609-616.   Published online 2019 Aug 21
DOI: https://doi.org/10.3365/KJMM.2019.57.9.609

Abstract
We employed spark plasma sintering (SPS) in the presence of sintering aids to fabricate high-quality Ho3+,Yb3+-co-doped Y2O3 transparent ceramics suitable for use as a laser gain medium, and analyzed their microstructure and optical properties. Ho3+,Yb3+-co-doped Y2O3 transparent ceramics with different contents of Yb3+ were fabricated by SPS and exhibited high..... More

                        
E-Submission
Email Alert
Author's Index
Specialties
Impact factor
The Korean Institute of Metals and Materials
SCImago Journal & Country Rank
Scopus
GoogleScholar
Similarity Check
Crossref Cited-by Linking
KOFST
COPE
Editorial Office
The Korean Institute of Metals and Materials
6th Fl., Seocho-daero 56-gil 38, Seocho-gu, Seoul 06633, Korea
TEL: +82-70-4266-1646   FAX: +82-2-557-1080   E-mail: metal@kim.or.kr
About |  Browse Articles |  Current Issue |  For Authors and Reviewers
Copyright © The Korean Institute of Metals and Materials. All rights reserved.                 Developed in M2Community