Researchers develop impurity-free process for powder injection molding of titanium components

Mar 08, 2005

New method could reduce fabrication costs and increase use of titanium and other metals

Researchers at the Department of Energy's Pacific Northwest National Laboratory have developed a new method for powder injection molding of titanium and similar materials to form components for advanced engineering applications.
Titanium offers high specific strength and excellent corrosion resistance, making it ideally suited to the automotive, aerospace, chemical production and biomedical equipment industries. However, use of injection molded titanium components has been severely limited by alloy impurities directly attributable to the current process.

The PNNL method overcomes these problems, allowing powder injection molding to be readily used in preparing components from alloys of titanium, tungsten, and niobium, as well as other reactive refractory materials. The key to the PNNL process is a proprietary binder that is cleanly removed during sintering and leaves no impurities that can cause degradation in material properties.

In addition, the porosity of components produced by the PNNL process can be tailored for a variety of specialized applications, including the design of self-lubricating parts and biomedical implants. This is accomplished by including easily removed fugitive phases in the powder mixture and by controlling the subsequent debinding and sintering heat treatments.

Derived from plastic injection molding, powder injection molding employs a mixture of metal powder and polymeric binder. It is a well established, cost-effective method of fabricating large volumes of small- to moderate-size, net shape components and can be used to produce parts of complex shape. Because fabrication temperatures are relatively low (~150 - 250°C), the molds employed in powder injection molding are less expensive than those used in other forming techniques, such as die casting or forging.

Source: Pacific Northwest National Laboratory

Explore further: Audi to develop Tesla Model S all-electric rival

add to favorites email to friend print save as pdf

Related Stories

Fewer surgeries with degradable implants

Nov 04, 2014

Until now, in cases of bone fracture, doctors have used implants made of steel and titanium, which have to be removed after healing. To spare patients burdensome inter- ventions, researchers are working on ...

First powder injection molding process for pure niobium

Oct 17, 2005

Penn State researchers have developed the first powder injection molding process for pure niobium, a biocompatible material similar to platinum and titanium but cheaper. The researchers, who are based in the University's Cen ...

High-quality products from rubber residues

Nov 01, 2012

Rubber residues can be downcycled to floor coverings and safety crashpads, and for the first time, also processed into high-quality plastics. A new kind of material makes it possible: the environmentally-friendly ...

Recommended for you

Audi to develop Tesla Model S all-electric rival

9 hours ago

The Tesla Model S has a rival. Audi is to develop all-electric family car. This is to be a family car that will offer an all-electric range of 280 miles (450 kilometers), according to Auto Express, which ...

A green data center with an autonomous power supply

14 hours ago

A new data center in the United States is generating electricity for its servers entirely from renewable sources, converting biogas from a sewage treatment plant into electricity and water. Siemens implemented ...

After a data breach, it's consumers left holding the bag

15 hours ago

Shoppers have launched into the holiday buying season and retailers are looking forward to year-end sales that make up almost 20% of their annual receipts. But as you check out at a store or click "purchase" on your online shopping cart ...

Can we create an energy efficient Internet?

15 hours ago

With the number of Internet connected devices rapidly increasing, researchers from Melbourne are starting a new research program to reduce energy consumption of such devices.

Brain inspired data engineering

16 hours ago

What if next-generation ICT systems could be based on the brain's structure and its cognitive and adaptive processes? A groundbreaking paradigm of brain-inspired intelligent ICT architectures is being born.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.