Kinetic role of Cu content in reaction process, behavior and their relationship among Cu-Zr-C system

2019 ◽  
Vol 35 (10) ◽  
pp. 2375-2382
Author(s):  
Qiaodan Hu ◽  
Xianrui Zhao ◽  
Siyu Sun ◽  
Hua Zheng ◽  
Sheng Cao ◽  
...  
2007 ◽  
Vol 71 (06) ◽  
pp. 641-650 ◽  
Author(s):  
L. Bindi ◽  
M. Evain ◽  
P. G. Spry ◽  
K. T. Tait ◽  
S. Menchetti

Abstract The pearceite-polybasite group of minerals, general formula [M6T2S7][Ag9CuS4] with M = Ag, Cu; and T = As, Sb, show a crystal structure which can be described as the succession, along the c axis, of two pseudo-layer modules: a [M6T2S7]2– A module layer and a [Ag9CuS4]2+ B module layer. Copper is present in one structural position of the B module layer and replaces Ag in the only fully occupied M position of the A module layer. When the Cu content is >4.00 a.p.f.u., the structural position of the A module layer becomes Cu-dominant and, consequently, the mineral deserves its own name. In this paper we report the crystal-chemical characterization of two Cu-rich members exhibiting the 111 unitcell type (corresponding to the Tac polytype). One sample (space group (P )m1, a 7.3218(8), c 11.8877(13) Å, V 551.90(10) Å3, Z = 1) having As >Sb and with the structural position of the A module layer dominated by Cu, has been named cupropearceite and the other sample (space group (P3̄)m1, a 7.3277(3), c 11.7752(6) Å, V 547.56(8) Å3, Z = 1) having Sb >As has been named cupropolybasite. Both the new minerals and mineral names have been approved by the IMA-CNMNC.


2018 ◽  
Vol 54 (5) ◽  
pp. 4400-4408 ◽  
Author(s):  
Xingjie Jia ◽  
Yanhui Li ◽  
Licheng Wu ◽  
Yan Zhang ◽  
Lei Xie ◽  
...  

2021 ◽  
Vol 18 (6) ◽  
pp. 1969-1978
Author(s):  
Mengxian Zhang ◽  
Xianrui Zhao ◽  
Hongtao Wang ◽  
Hailong Yao ◽  
Yi Ding ◽  
...  

2021 ◽  
pp. 151540
Author(s):  
Sylwia Górecka ◽  
Kateřina Pacultová ◽  
Aneta Smýkalová ◽  
Dagmar Fridrichová ◽  
Kamil Górecki ◽  
...  

2009 ◽  
Vol 7 (3) ◽  
pp. 255-258 ◽  
Author(s):  
Ali Karpuz ◽  
Mursel Alper ◽  
Hakan Kockar
Keyword(s):  
Cu Films ◽  

2016 ◽  
Vol 80 (2) ◽  
pp. 325-335 ◽  
Author(s):  
Lei Ding ◽  
Céline Darie ◽  
Claire V. Colin ◽  
Pierre Bordet

AbstractThe Cu0.8Mg1.2Si2O6 pyroxene has been synthesized using a soft chemistry method. Its crystal structure was determined from powder X-ray diffraction data. Cu0.8Mg1.2Si2O6 crystallizes with the lowclinopyroxene monoclinic structure (space group P21/c). The role of the Jahn-Teller-distorted Cu2+ cation on the stability of this strongly distorted structure is investigated. Cu2+ shows a strong preference for the M2 site, attributed to a better adaptation of its JT-distorted coordination polyhedron to this already distorted and more flexible site. Comparison with previously reported compounds indicates that increasing the Cu content enhances the M2 site distortion, eventually leading to symmetry lowering from orthorhombic Pbca to monoclinic P21/c. These observations bring new insight into the mechanisms of formation and chemical composition of pyroxene minerals in the presence of JT cations.


2017 ◽  
Vol 728 ◽  
pp. 863-871 ◽  
Author(s):  
P. Balashabadi ◽  
M.M. Larijani ◽  
E. Jafari-Khamse ◽  
H. Seyedi

2020 ◽  
Vol 2 (2) ◽  
pp. 142-153
Author(s):  
Render Luwis

Abstract: The leader is the person who carries out the process, behavior or relationship. In this case the leader must have leadership qualities that are based on the based on the universal characteristics of a leader, for example, having this research is a literature study or literature review using reference books that contain a discussion about the leadership of the Apostle Paul as a role model in human resources development based on Ephesian 4:1-16 by applying descriptive methods. The leadership model of the Apostal Paul based on Ephesians 4:1-16 as the Role of the Gereja Bahagian Bahasa Melayu Human Resource Development Model in the State of Brunei Darussalam as follows: First the character of Christ-likeness. Second, the unity of believers because God is one which is the doctrinal expected by God to be the basis of theology of believers is that the believer must be able to maintain the unity of the Spirit by the bond of peace, not letting or even confounding. Third, unity of service by sharing gifts is God’s gift to believers to serve Him. Forth, the unity of being the perfect body or Christ is a process of believers throughout life continuously tirelessly focused to grow to be perfect.Abstrak: Pemimpin adalah orang yang melaksanakan proses, perilaku atau hubungan. Dalam hal ini pemimpin harus mempunyai kualitas kepemimpinan yang berbasiskan ciri universal seorang pemimpin, misalnya mempunyai Penelitian ini merupakan kajian literatur atau kajian pustaka dengan menggunakan buku-buku referensi yang memuat bahasan mengenai kepemimpinan Rasul Paulus sebagai role model dalam pengembangan Sumber Daya Manusia berdasarkan Efesus 4:1-16 dengan menerapkan metode deskriptif. Kesimpulan: Keteladanan Kepemimpinan Rasul Paulus berdasarkan Efesus 4: 1-16  sebagai Role  Model Pengembangan Sumber Daya Manusia Gereja Bahagian Bahasa Melayu di Negara  Brunei Darussalam sebagai berikut berikut: Pertama, karakter seperti Kristus. Kedua, kesatuan orang percaya karena Allah adalah satu adalah doctrinal yang diharapkan oleh Tuhan menjadi dasar teologi orang percaya adalah bahwa orang percaya wajib mampu memelihara kesatuan Roh oleh ikatan damai sejahtera, bukan membiarkan atau bahkan mengacaukan. Ketiga, kesatuan melayani dengan berbagai karunia  merupakan  pemberian Allah  kepada orang percaya agar mereka melayani-Nya. Keempat,  kesatuan menjadi tubuh Kristus yang sempurna merpakan proses orang percaya sepanjang hidup terus-menerus tanpa mengenal lelah  fokus untuk bertumbuh menjadi sempurna


1997 ◽  
Vol 3 (S2) ◽  
pp. 537-538
Author(s):  
D.T. Carpenter ◽  
M. Watanabe ◽  
K. Barmak ◽  
D.B. Williams ◽  
D.A. Smith

A typical microprocessor chip has several million devices patterned into it and, as fabrication techniques improve, device dimensions continue to shrink. This miniaturization results in a corresponding decrease in the dimensions of the interconnects between devices, causing an increased susceptibility to failure by current-induced mass transport, or electromigration (EM). It is well known that the addition of a small amount of Cu to Al interconnects increases their median time to failure profoundly. Since EM in these films occurs almost exclusively at grain boundaries, the simplest explanation for the role of Cu is that it segregates to the grain boundaries and reduces their diffusivity. Analytical electron microscopy studies have shown that Cu segregates to grain boundaries in Al under the proper conditions, and its concentration was measured using X-ray energy dispersive spectroscopy (EDS), but only a small number of boundaries were measured.In order to determine whether the distribution of Cu affects the resistance of a material to EM damage, it is first necessary to characterize the Cu content of the material as a whole, which requires the analysis of large numbers of boundaries rather than just a few.


2016 ◽  
Vol 18 (16) ◽  
pp. 10781-10791 ◽  
Author(s):  
Yeusy Hartadi ◽  
Daniel Widmann ◽  
R. Jürgen Behm

Applying isotope labelling studies it is demonstrated that CO2 is the main source for MeOH formation from CO2/CO/H2 mixtures on Au/ZnO.


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