The Experts below are selected from a list of 12798 Experts worldwide ranked by ideXlab platform

J R Conrad - One of the best experts on this subject based on the ideXlab platform.

  • Chromium Plating pollution source reduction by plasma source ion implantation
    Surface & Coatings Technology, 1996
    Co-Authors: A Che, X Qiu, Kuma Sridhara, W G Horne, R A Dodd, A H Hamdi, A A Elmoursi, G W Malaczynski, J R Conrad
    Abstract:

    There is growing concern over the environmental and workers' health issues due to the chemical baths and rinse water used in the hard Chromium Plating process. In this regard the significant hardening response of Chromium to nitrogen ion implantation can be environmentally beneficial from the standpoint of decreasing the thickness and the frequency of application of Chromium Plating. In this paper the results of a study of nitrogen ion implantation of chrome-plated test flats using the non-line-of-sight plasma source ion implantation (PSII) process are discussed. Auger electron spectroscopy (AES) showed the implanted layer thickness to be about 2000 A. Electron spectroscopy for chemical analysis (ESCA) indicated the formation of Chromium nitride phase in the implanted layer. The wear resistance improves after implantation owing to both surface hardening and a decrease in coefficient of friction. Corrosion resistance in saline solution improved moderately after PSII treatment.

  • Chromium Plating pollution source reduction by plasma source ion implantation
    International Conference on Plasma Science, 1995
    Co-Authors: A Che, X Qiu, Kuma Sridhara, W G Horne, R A Dodd, A H Hamdi, A A Elmoursi, G W Malaczynski, J R Conrad
    Abstract:

    There is growing concern over the environmental toxicity and workers' health issues due to the chemical baths and rinse water used in the hard Chromium Plating process. In this regard the significant hardening response of Chromium to nitrogen ion implantation can be environmentally beneficial from the standpoint of decreasing the thickness and the frequency of application of Chromium Plating. In this paper the results of a study of nitrogen ion implantation of chrome plated test flats using the non-line-of-sight Plasma Source Ion Implantation (PSII) process, are discussed. Surface characterization was performed using Scanning Electron Microscopy (SEM), Auger Electron Spectroscopy (AES), and Electron Spectroscopy for Chemical Analysis (ESCA). The surface properties were evaluated using a microhardness tester, a pin-on-disk wear tester, and a corrosion measurement system. Industrial field testing of nitrogen PSII treated Chromium plated parts showed an improvement by a factor of two compared to the unimplanted case.

Hori Masao - One of the best experts on this subject based on the ideXlab platform.

  • trivalent Chromium Plating liquid and trivalent Chromium Plating method
    2016
    Co-Authors: Hori Masao, Matsushima Yusuke
    Abstract:

    PROBLEM TO BE SOLVED: To provide trivalent Chromium Plating having glossy appearance and corrosion resistance equal to those of hexavalent Chromium Plating and further having excellent salt damage resistance.SOLUTION: Provided is a trivalent Chromium Plating liquid containing a trivalent Chromium compound, a conductive salt, a pH buffer and a complexing agent, in which the concentration of metallic Chromium is 1 to 20 g/l, as the conductive salt, two or more kinds selected from the alkali metal salt or ammonium salt of chlorides are used, also, their total content is 150 to 400 g/L, and iron and sulfur-containing organic compounds are not included, and a trivalent Chromium Plating method using the same.SELECTED DRAWING: None

  • decorative trivalent Chromium Plating solution and decorative Chromium Plating method utilizing the same
    2016
    Co-Authors: Hori Masao
    Abstract:

    PROBLEM TO BE SOLVED: To provide a decorative trivalent Chromium Plating that is a decorative Chromium Plating using a trivalent Chromium, and that boasts an equivalent performance to a hexavalent Chromium Plating solution used thus far.SOLUTION: Provided is: a decorative Chromium Plating solution that is a trivalent Chromium Plating solution containing a trivalent Chromium compound, a conductive salt, a pH buffering agent and a complexing agent, and in which, characterized, sulfamic acid salt as conductive salt is used in combination of two kinds or more; and a decorative Chromium Plating method utilizing the same.SELECTED DRAWING: None

A Che - One of the best experts on this subject based on the ideXlab platform.

  • Chromium Plating pollution source reduction by plasma source ion implantation
    Surface & Coatings Technology, 1996
    Co-Authors: A Che, X Qiu, Kuma Sridhara, W G Horne, R A Dodd, A H Hamdi, A A Elmoursi, G W Malaczynski, J R Conrad
    Abstract:

    There is growing concern over the environmental and workers' health issues due to the chemical baths and rinse water used in the hard Chromium Plating process. In this regard the significant hardening response of Chromium to nitrogen ion implantation can be environmentally beneficial from the standpoint of decreasing the thickness and the frequency of application of Chromium Plating. In this paper the results of a study of nitrogen ion implantation of chrome-plated test flats using the non-line-of-sight plasma source ion implantation (PSII) process are discussed. Auger electron spectroscopy (AES) showed the implanted layer thickness to be about 2000 A. Electron spectroscopy for chemical analysis (ESCA) indicated the formation of Chromium nitride phase in the implanted layer. The wear resistance improves after implantation owing to both surface hardening and a decrease in coefficient of friction. Corrosion resistance in saline solution improved moderately after PSII treatment.

  • Chromium Plating pollution source reduction by plasma source ion implantation
    International Conference on Plasma Science, 1995
    Co-Authors: A Che, X Qiu, Kuma Sridhara, W G Horne, R A Dodd, A H Hamdi, A A Elmoursi, G W Malaczynski, J R Conrad
    Abstract:

    There is growing concern over the environmental toxicity and workers' health issues due to the chemical baths and rinse water used in the hard Chromium Plating process. In this regard the significant hardening response of Chromium to nitrogen ion implantation can be environmentally beneficial from the standpoint of decreasing the thickness and the frequency of application of Chromium Plating. In this paper the results of a study of nitrogen ion implantation of chrome plated test flats using the non-line-of-sight Plasma Source Ion Implantation (PSII) process, are discussed. Surface characterization was performed using Scanning Electron Microscopy (SEM), Auger Electron Spectroscopy (AES), and Electron Spectroscopy for Chemical Analysis (ESCA). The surface properties were evaluated using a microhardness tester, a pin-on-disk wear tester, and a corrosion measurement system. Industrial field testing of nitrogen PSII treated Chromium plated parts showed an improvement by a factor of two compared to the unimplanted case.

Aimin Liang - One of the best experts on this subject based on the ideXlab platform.

  • method for preparing Chromium carbon nano tube composite coating in trivalent Chromium Plating solution
    2010
    Co-Authors: Aimin Liang, Zhixiang Zeng, Junyan Zhang
    Abstract:

    The invention discloses an electrodeposition method for preparing a Chromium-carbon nano tube composite coating in trivalent Chromium Plating solution. The invention adds a carbon nano tube in a basis electrolyte comprising chromic chloride to prepare the Chromium-carbon nano tube composite coating with smooth surface and firm combination with the substrate by controlling the proper process conditions. The invention has the advantages that the prepared Chromium-carbon nano tube composite coating has a thickness of more than 5mum, and has higher hardness, abrasion resistance and corrosion resistance than the hexavalent Chromium Plating coating; and the method can replace the conventional hexavalent Chromium Plating process under a certain friction working condition.

  • method for preparing Chromium based composite coating in environment protection type trivalent Chromium Plating bath
    2009
    Co-Authors: Junyan Zhang, Zhixiang Zeng, Aimin Liang
    Abstract:

    The invention discloses a method for preparing a Chromium-based composite Plating layer in an environment-friendly trivalent Chromium Plating bath. The method adds different particles in a basic electrolyte containing Chromium chloride to prepare the Chromium-based composite Plating layer which has even surface and is firmly combined with a substrate by selecting appropriate process conditions. The method has the advantage that the thickness of the prepared Chromium-based composite Plating layer is more than 50mu m. The composite Plating layer has the hardness higher than that of a hexavalent chrome electroPlating layer and the tribological property equivalent to that of the hexavalent chrome electroPlating layer, and can substitute the prior hexavalent chrome electroPlating technology under various friction working conditions.

  • method for electrodeposition of Chromium phosphor alloy coating in environment protection type trivalent Chromium Plating bath
    2009
    Co-Authors: Junyan Zhang, Zhixiang Zeng, Aimin Liang
    Abstract:

    The invention discloses a method for electrodepositing a Chromium-phosphorus alloy Plating layer in an environment-friendly trivalent Chromium Plating bath. The method, in an electrolyte containing Chromium chloride, prepares the Chromium-phosphorus alloy Plating layer which has even surface, is firmly combined with a substrate, and has the corrosion resistance superior to that of a hexavalent chrome electroPlating layer by selecting an additive and controlling appropriate process conditions. The method has the advantages of steady process, wide operating conditions, and low energy consumption, and the dispersive capacity, the covering capacity and the current efficiency of the method are higher than those of hexavalent chrome electroPlating technology. The method can partially substitute the prior hexavalent chrome electroPlating technology which seriously pollutes the environment and endangers the health of human bodies.

A B Velichenko - One of the best experts on this subject based on the ideXlab platform.