The role of powder metallurgy technology

Throughout the current situation of international research and development of new materials, the major industrial developed countries in the west are focusing on manpower and material resources to seek breakthroughs. The United States, the European Community, Japan and South Korea in their Z new national science and technology plan, all regard new materials and their preparation technology as one of the national key technologies to be supported. Great emphasis is placed on the outstanding role of new materials in developing national economy, safeguarding national security, improving people's health and improving people's quality of life. China has always attached great importance to new materials and their preparation technology, which has been included in the national science and technology development plans since 1956 as an important field. In our 863 high technology, new technology material is one of the seven key fields.

After more than 40 years of efforts, remarkable progress has been made in many aspects, a large number of new materials have been successfully applied in the field of national defense and civil industry, some of the new materials research ranks the international leading level, which lays a good foundation for the sustainable development of new materials and their preparation technology in the early 21st century. The research of new materials and their preparation technology will have a significant impact on the development of the world economy, and its development trends are mainly reflected in:

(1) Functional materials are developing in the direction of multi-function, integration, miniaturization and intelligence;

(2) Structural materials to high performance, composite, functional and low-cost direction;

(3) The rapid development of thin film and low-dimensional materials silk, biomedical materials suddenly rise;

(4) The finishing technology and near-net forming technology of new material products are highly valued;

(5) The coordination of materials and their products with the ecological environment has been emphasized to meet the requirements of sustainable social development;

The research and development of tungsten steel alloy materials should not only closely cooperate with the research and development of devices, but also pay attention to their own systematic and advanced, so as to facilitate the material to achieve leapfrog development.

The role of powder metallurgy technology

Since the research field of tungsten alloy new material technology frontier entered the 1990s, the development of material science and technology is very rapid. Materials science, life science, information science, cognitive science, environmental science and so on together constitute the frontier of contemporary science and technology.

Looking forward to the 21st century, the frontiers of material science and technology based on the new achievements of natural sciences such as physics, chemistry and mathematics and engineering technologies such as electronics, chemical engineering and metallurgy are mainly as follows: Microelectronic materials mainly include large true diameter (400mm) silicon single crystal and sheet technology, large diameter (200mm) silicon wafer epitaxy technology, 150mmGaAs and 100mmInP wafers and the preparation of II-V semiconductor superlattices and quantum well heterostructural materials based on them, GeSi alloy and wide band gap semiconductor materials, etc.

The new metal materials are mainly light and high strength materials for transportation, high temperature corrosion resistant materials for energy and power, brittleness control and toughening technology of new ordered intermetallic compounds and high reliability production and manufacturing technology. Advanced ceramic materials are mainly information function ceramic multi-function and system integration technology, high performance ceramic film, heterogeneous film preparation, integration and micro-machining technology, structural ceramics and its composite materials reinforcement, toughening technology, low cost, high reliability, mass preparation technology of advanced ceramics. High temperature superconducting materials are mainly the mass production technology of high temperature superconducting materials (quasi-single crystal and texture materials), which can be applied to the preparation, integration and micromachining technology of high temperature superconducting films and heterogeneous structures.

Environmental materials mainly include assessment technology of environmental coordination of materials, new technology of life extension, regeneration and comprehensive utilization of materials, and new technology of reducing material production resources and energy consumption. Nanomaterials and technology are the key technologies for the preparation and application of nanomaterials, including the preparation of solid-state devices and nanomachination technology. Intelligent material is mainly the design, preparation and application technology of intelligent material and intelligent system. The preparation and evaluation technology of materials mainly includes precision preparation of materials, near-net shaping technology and intelligent processing technology, low-cost approach and batch production technology of material surface modification technology, modeling technology of material microstructure, intelligent control and dynamic real-time monitoring and analysis technology, and new technology of different levels of design, performance prediction and evaluation characterization.

The characteristics of tungsten steel alloy powder metallurgy technology and its role in the study of new materials Powder metallurgy is to make metal or metal powder (or a mixture of metal powder and non-metal powder) as raw materials, through forming and sintering, manufacturing metal materials, composite and various types of products technology. Powder metallurgy is similar to the production of ceramics, so a series of new powder metallurgy techniques can also be used for the preparation of ceramic materials. Due to the advantages of powder metallurgy technology, it has become the key to solve the problem of new materials and plays an important role in the development of new materials.