Hydrogenated amorphous carbon-sulfur alloy thin films grown from a CH4 and H2S gas mixture by rf glow discharge

Al-Dallal, S.; Al-Alawi, S.M.; Aljishi, S.; Hamman, M.; Arekat, S.

doi:10.1016/0022-3093(95)00580-3

Journal of Non-Crystalline Solids

1996

DOI: 10.1016/0022-3093(95)00580-3

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Hydrogenated amorphous carbon-sulfur alloy thin films grown from a CH4 and H2S gas mixture by rf glow discharge

S. Al-Dallal

S.M. Al-Alawi

S. Aljishi

et al.

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“…The S-bearing alloys are used as high-temperature materials, high temperature lubricants or surface materials in modern industrial application. Examples include Fe-S [13] , Ni-S [14 16] , C-S [17] , Si-S [18] , Fe-Ni-S [19] , Fe-Si-S [20] , Sn-S [21] , Ni-S-Co [22] , Ni-Cr-S [23] , Ni-Cr-Mo-S [24] , Ni-Fe-W-S [25] and Ni-Fe-W-P-S [26] . No natural S-bearing alloys have yet been reported.…”

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confidence: 99%

Discovery of Cu-Ni-Zn-Sn-Fe intermetallic compounds and S-bearing alloys in the Zhaishang gold deposit, southern Gansu Province and its geological significance

Liu

Guangjian

et al. 2008

Sci. China Ser. D-Earth Sci.

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Examination of ores by optical microscope and EPMA from the Zhaishang gold deposit, southernGansu Province, has revealed an abundance of rare minerals. These include native metals, Cu-Ni-Zn-Sn-Fe polymetallic compounds and S-bearing alloys of Ni, Fe, Zn, Cu and Sn, occurring as native nickel, Zn-Cu alloy, Ni-Zn-Cu alloy, Sn-Zn-Ni-Cu alloy, Zn-Cu-Ni alloy, Zn-Fe-Cu-Sn-Ni alloy, Fe-Ni-S alloy, Sn-Fe-Ni-S alloy, Fe-Zn-Cu-Ni-S alloy, Zn-Ni-Cu-Fe-S alloy and others. Compared with the Zn-Cu alloy minerals discovered previously, these Zn-Cu minerals fall in the Į or D+E portion in Zn-Cu alloy phase diagram, and the Į portion has higher Cu content. Cu-Ni-Zn-Sn-Fe intermetallic compounds and S-bearing alloy minerals have not been previously reported in the literature. These rare alloys formed in a strongly reducing environment with absent oxygen and low sulfur activities.gold deposit, native metal, polymetallic compound, S-bearing alloy, geological significance, Gansu Ever since Fe-Ni and Fe-Ni-Co alloys were found by Melville [1] in Oregon, the native metals and their intermetallic compounds of Fe-group elements, PGE, W-Mo group elements and sulfurized ore-forming metals have been described in lunar rock, aerolite, granite, ophiolite, kimberlite, lamproite, gabbro-diabase, quartz diorite, volcanic tuff and ore deposits of chromite, diamonds, asbestos, porphyry copper, cobalt, Cu-Ni sulfides, REE, gold, the oxidized zone of sulfides and residual talus. As examples, large quantities of native metals and alloys (Cu 2 Zn, Cu 2 Ni ) are hosted by ophiolite in the Far-east Koryak plateau [2 4] ; PGEs and their alloys are hosted by ophiolite and chromite in Kempirsai, Kazakstan [5] ; PGEs and their alloys hosted by the ophiolite complex and alluvium in New Caledonia [6] ; abundant Fe group elements, PGEs and Cu-Zn intermetallic compounds hosted by the quartz gold deposit of Sukhol Log in Russia [7] ; the metallic films on diamond hosted by kimberlite and lamproite; and large quantities of native metals and various of alloys such as Cu, Sn, Fe, Zn, Ni-Fe, Fe-Sn, Cu-Zn, Cu 2 Zn, Cu 3 Zn 2 , Cu 3 Sn, Cu-Zn-Pb and Pb-SnCu(Au) hosted by ultramafic rock and chromite in the northern margin of Russian platform [8] ; the Cu-Zn and Cu-Sn alloys in the Sumatra placer in India [9] ; and more than 200 native metals and intermetallic compound minerals summarized by Makeev et al. [10] in Alpine ophiolites. In China, many reports about the study of native elements and intermetallic compound were published [11] . There have been many examples of native elements (Cu, Zn, Ni, Fe, Sn) and their intermetallic compounds from producing areas in China. They are hosted by various rocks as follows: (1) aerolite; (2)

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confidence: 99%

Discovery of Cu-Ni-Zn-Sn-Fe intermetallic compounds and S-bearing alloys in the Zhaishang gold deposit, southern Gansu Province and its geological significance

Liu

Guangjian

et al. 2008

Sci. China Ser. D-Earth Sci.

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Incorporation of sulfur into hydrogenated amorphous carbon films

Filik

Lane

May

et al. 2004

Diamond and Related Materials

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Amorphous hydrogenated carbon-sulfur thin films (a-C:H:S) were deposited from CH yH S gas mixtures by capacitively-4 2 coupled radio-frequency PECVD. X-ray photoelectron spectroscopy (XPS) and secondary ion mass spectrometry (SIMS) were used to probe the composition of the films. XPS showed that the sulfur atomic percentage within a film was proportional to the fraction of H S in the H SyCH gas mixture, and that films had been deposited with a sulfur content of up to 27 at.%. SIMS showed that the distribution of C and S was homogeneous throughout the films. Ex situ variable angle spectroscopic ellipsometry was used to evaluate the band gap energy variation by three different methods. Values of the E04 band gap for these films were between 1.5 and 2.5 eV, with refractive index values of between 1.8 and 2.1. Laser Raman spectroscopy (514.5 nm) suggested that the addition of sulfur increases the clustering of aromatic six-membered rings. ᮊ

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Hydrogenated amorphous carbon-sulfur alloy thin films grown from a CH4 and H2S gas mixture by rf glow discharge

Cited by 2 publications

References 5 publications

Discovery of Cu-Ni-Zn-Sn-Fe intermetallic compounds and S-bearing alloys in the Zhaishang gold deposit, southern Gansu Province and its geological significance

Discovery of Cu-Ni-Zn-Sn-Fe intermetallic compounds and S-bearing alloys in the Zhaishang gold deposit, southern Gansu Province and its geological significance

Incorporation of sulfur into hydrogenated amorphous carbon films

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