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2 edition of Nitrogen implantation of tool steels and engineering coatings. found in the catalog.

Nitrogen implantation of tool steels and engineering coatings.

Jose Ignacio Onate

Nitrogen implantation of tool steels and engineering coatings.

by Jose Ignacio Onate

  • 214 Want to read
  • 39 Currently reading

Published by Aston University. Department ofMechanical and Production Engineering in Birmingham .
Written in English


Edition Notes

Thesis (PhD) - Aston University, 1987.

ID Numbers
Open LibraryOL13877300M

@article{osti_, title = {Handbook of Tribology: Materials, coatings, and surface treatments}, author = {Bhushan, B and Gupta, B K}, abstractNote = {This book provides an introduction to tribological principles as well as all types of coatings, surface treatments and modifications. The first chapter provides an overview of the various types of lubricants. The method has an obvious advantage for nonconductive coatings and substrates and for coatings only slightly different in mechanical properties from the substrate, as nitrogen implantation hardening layers. This potential of the method has been illustrated on tool steel samples having a μm thick nitrogen implantation coating.

40–>70 Alloy steels, tool steels, cobalt and nickel alloys Produces a hard compound layer, mostly applied over hardened tool steels, high process temperature can cause distortion Thermal diffusion process Diffused carbide layers via salt bath processing –°C (– °F) 2–20 µ m (– mil). F. M. Kustas, W. S. Sampath and M. S. Misra, "High Current Density Ion Implantation Processing of C Steel; Part II--Mechanisms for Rolling Contact Fatigue Improvements," submitted to Journal of Surface and Coatings Technology. 7.

  Briefly, ion implantation is a line-of-sight process in which ions are extracted from plasma, accelerated, and bombarded into a device. Gavini et al. showed that nitrogen ion implantation improved the cyclic fatigue resistance of NiTi rotary instruments. They found that ion-implanted instruments reached significantly higher value of CTF (cycles. The nitriding behavior of austenitic stainless steels (AISI and ) was studied by different cold work degree (0% (after heat treated), 10%, 20%, 30%, and 40%) before nitride processing. The microstructure, layer thickness, hardness, and chemical microcomposition were evaluated employing optical microscopy, Vickers hardness, and scanning electron microscopy .


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Nitrogen implantation of tool steels and engineering coatings by Jose Ignacio Onate Download PDF EPUB FB2

Oñate, J. I., Dennis, J. and Hamilton, S. (), ‘ Wear behaviour of nitrogen implanted AISI martensitic stainless steel ’, Surface and Coatings Technol – Opitz, H.

and König, W. (), ‘ Basic research on the wear of high speed steel cutting tools ’, in Materials for Metal Cutting, ISI Publication Author: P.

Dearnley. In the present work nitrogen ion implantation at 90 keV and doses above ions/cm2 has been carried out on AISI M2, D2 and steels and engineering coatings such as hard chromium, electroless Ni-P and a brush plated Co-W by: 1. Nitrogen implantation hardened the surface of steels and Cr and Co-W coatings.

An ultra-microhardness technique showed that the true hardness of implanted layers was greater than the values obtained by conventional micro-hardness methods, which often result in penetration below the implanted : Jose I. Onate. High and low Cr-content tool steels, SKD11 and SKS3, are implanted successively with 50 keV Cr-ions and 90 keV N 2-ions to fluences of 4×10 17 Cr + cm −2 and 4× 17 N + cm −ardness and wear tests, in either dry air or diluted NaCl+H 2 SO 4 solution environments, are used to investigate the effects of the multiply ion-implanted steel surface Cited by: PDF | In the paper, the issue of the cermet cutting tools wear resistance was addressed.

The tool inserts made out of cermet composites were exposed to | Find, read and cite all the research. Nitrogen implantation is actually the solution implemented in 80%÷90% of all cases. Medium – high dose (1÷4x ions/cm2) nitrogen implantation of steels is widely employed for the most standard applications.

Lifetime increases by three to five times. Nitrogen ion implantation has generally been used to enhance hardness, wear. Also implanted into the four steels were 60 keV C + ions using the same doses. The Knoop microhardnesses on the sample surfaces increased by 31–72% at load of 25 gf after nitrogen ion implantation.

There was no obvious effect on microhardness after carbon ion implantation. Tribological properties of the nitrogen ion implanted samples were. Nitriding is a heat treating process that diffuses nitrogen into the surface of a metal to create a case-hardened surface. These processes are most commonly used on high-carbon, low-alloy steels.

They are also used on medium and high-carbon steels, titanium, aluminium andnitriding was used to generate unique duplex microstructure (Martensite. The implanted inserts were subjected to a simulated sawing test to rank their performance against unimplanted M2 and stellite, a material used in the forest products industry for wood machining.

Based on the results of this investigation, nitrogen ion implantation appears to be a promising method for reducing the wear of wood machining tools. Basic research and new manufacturing methods have led to high nitrogen steels (HNS), a promising new group of materials for use in advanced applications in mechanical and chemical engineering.

The book deals with the atomic structure, constitution, properties, manufacturing and application of martensitic, austenitic, duplex and dualphase steels of superior strength. Overall, nitrogen ion implantation has continuously demonstrated its ability to significantly improve hardness and wear resistance properties.

In fact, over 90% of the non-electric applications of ion implantation utilize nitrogen ions. High Carbon Steels. Mold steels are usually made from high carbon steels with low-temperature tolerance.

Alonso's 29 research works with citations and 1, reads, including: IONITE: un tratamiento superficial para la mejora del comportamiento de moldes, matrices y herramientas. Titanium nitride and/or nitrogen ion implanted coated dental materials have been investigated since the mids and considered in various applications in dentistry such as implants, abutments, orthodontic wires, endodontic files, periodontal/oral hygiene instruments, and casting alloys for fixed restorations.

Multiple methodologies have been employed to create the coatings. From the author of the classic reference, Die Design Handbook, Die Maintenance Handbook crystallizes lessons that have been learned through years of scrupulous problem solving in countless shops around the globe.

It goes beyond typical solutions to common tool and die problems. It gives effective maintenance strategies, so trouble can be avoided early in the s: 1.

Pandurangan Saravanan, Vngaranahalli Srinivasan Raja, Surface Characterization of Plasma Immersion Nitrogen Ion Implanted Austenitic Stainless Steel, Colloid and Surface Science. Vol. 2, No. 1,pp. K. Lukaskowicz, L. Dobrzansky, M. Pancielejko, Mechanical Properties of the PVD Gradient Coatings Deposited Onto the Hot Work Tool Steel X40CrMoV, Journal of Achievements in Materials and Engineering, 24, – ().

Google Scholar; S. Immersion Ion Implantation (PI3) and Physical Vapor Deposition (PVD) coating, rendered it the most suitable contender for proof dies.

The Viking tool steel was subsequently treated/coated by PI (a non-line-of-sight nitrogen implantation process developed by Australian Nuclear Science and Technology.

Ion implantation using Mo or Ta was recommended for improving the corrosion resistance and hardness of S7 tool steel in an ASM Int. forum. [Nitrogen implantation is commonly used to improve hardness, but usually only on specific alloys and not for corrosion resistance.].

A single high-nitrogen face-centered-cubic (f.c.c.) phase (γ N) layer formed on the plasma source nitrided AISI austenitic stainless steel at a nitriding temperature of °C for a nitriding time of 6 approximately 17 μm-thick γ N layer has a peak nitrogen concentration of about 20 at.

Tribological properties of the γ N phase layer on a ball-on-disk tribometer against an Si 3 N. Ion implantation is a low-temperature process by which ions of one element are accelerated into a solid target, thereby changing the physical, chemical, or electrical properties of the target.

Ion implantation is used in semiconductor device fabrication and in metal finishing, as well as in materials science research. The ions can alter the elemental composition of the target (if the.

Ion implantation is not a coating process; it hardens the tool steel by bombarding and impregnating the surface with nitrogen ions, explains Dr. James Arps, SwRI research scientist. Because there's no surface build-up or significant heat involved, the method makes no dimensional changes or thermal deformation.

These steels have taken the concept of a lubricious coating and brought it to the powder stage of manufacture. Nitrogen is diffused throughout the tool steel cross-section in the form of nitrides. The inherent low coefficient of friction creates a result that minimizes the use of external coatings in applications where adhesive wear or sticking.Mitsuo, A, Uchida, S & Aizawa, T' Effect of pulse bias voltage and nitrogen pressure on nitrogen distribution in steel substrate by plasma immersion ion implantation of nitrogen ', Surface and Coatings Technology, vol.no.

SPEC. ISS., pp.