Composite materials based on tungsten carbide and having noble metal binders, and method for producing said composite materials

A technology of composite materials and precious metals, applied in hypodermic injection devices, blood pumps, suction devices, etc., can solve the problem of undisclosed containing composite materials

Inactive Publication Date: 2020-11-06
UNIVERSITY OF ROSTOCK +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, composites containing at least 80% by weight (Gew.%) of WC and at least 2% by weight of noble metals are not disclosed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite materials based on tungsten carbide and having noble metal binders, and method for producing said composite materials
  • Composite materials based on tungsten carbide and having noble metal binders, and method for producing said composite materials
  • Composite materials based on tungsten carbide and having noble metal binders, and method for producing said composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] The preparation method of the sintered composite material of tungsten carbide and gold of the present invention is illustrated by way of example below:

[0036] 1. Preparation of sintered composite materials of tungsten carbide and gold.

[0037] 23.75g of tungsten carbide and 1.25g of gold powder were ground in hexane in a ball mill at 200rpm with a ball-to-powder ratio of 10:1 for 2 hours. The mixed powders were dried and transferred into graphite molds with a diameter of 20 mm. The powder is vacuum processed in graphite molds in the FAST chamber. The initial pressure is 10MPa. Over the next 15 minutes, the pressure rose steadily to 100 MPa. The maximum application pulse direct current of FAST method reaches 2kA, and the voltage reaches 5.3V. The sample is heated to 1600°C at a rate of 150K / min. During the sintering process, the residence time at 1600°C was 5min, after which the current was turned off, but the sample pressure was maintained. After the sintering ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to composite materials based on tungsten carbide and comprising gold, palladium and / or platinum and to a method for producing said composite materials by sintering. By means of the FAST method, hard and biocompatible WC / (Au, Pd, Pt) composite materials can be produced, inter alia for use as coatings on tools and prostheses and as solid bodies in, for example, blood pumps.

Description

technical field [0001] The invention relates to a sintered composite material based on tungsten carbide comprising the noble metals gold, platinum and / or palladium and a method for its preparation, the material. It has been found that the method of the invention makes it possible to produce particularly hard and biocompatible cemented carbides based on the sintering of tungsten carbide using gold, platinum and / or palladium. Its uses include nickel-free, wear-resistant hard design materials for food processing or pharmaceutical machinery components such as deflectors, nozzles and diaphragms, and medical device materials for implants or processing tools such as knives and scissors . Furthermore, these cemented carbides can also be used, for example, as coatings for tools and prostheses in medical technology, and as solid bodies for pumps. Background technique [0002] Cemented carbides are characterized by very high hardness, especially at higher temperatures, and good wear ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105C04B35/56C22C29/06C22C29/08A61M1/12A61M60/122
CPCC04B35/5626C04B35/645C04B2235/408C04B2235/5445C04B2235/5454C04B2235/6562C04B2235/6581C04B2235/666C04B2235/72C04B2235/77C04B2235/785C04B2235/80C04B2235/96B22F3/105B22F2003/1051C22C29/067C22C29/08A61M60/122B22F2302/10B22F2301/25
Inventor 卡斯特·达梅罗维克托·博德纳埃伯哈德·伯克尔
Owner UNIVERSITY OF ROSTOCK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap