- Oct 17, 2023

Why High Purity Alumina (HPA) is a Perfect Match for the Ceramics Industry 

Ceramics are materials that are made from inorganic, non-metallic compounds. They are typically hard, strong, and resistant to heat and corrosion. Ceramics are used in a wide variety of applications, including in the electronics, automotive, and medical industries.

High purity alumina (HPA) is a type of alumina that has a purity of 99.99% or higher. It is made by purifying bauxite, which is the main ore of aluminium. HPA is a white, odourless, and tasteless powder. It is insoluble in water and most organic solvents.

HPA has a number of properties that make it a great fit for the ceramics industry. These properties include:

  • High melting point: HPA has a melting point of 2,050 degrees Celsius (3,722 degrees Fahrenheit). This makes it a good choice for applications where the ceramic will be exposed to high temperatures.
  • High hardness: HPA has a hardness of 9 on the Mohs scale. This makes it one of the hardest materials known.
  • High chemical resistance: HPA is resistant to most acids and bases. This makes it a good choice for applications where the ceramic will be exposed to chemicals.
  • High dielectric strength: HPA has a dielectric strength of 10,000 volts per centimetre. This makes it a good choice for applications where the ceramic will be used as an insulator.
  • Low thermal expansion coefficient: HPA has a low thermal expansion coefficient. This means that it does not expand or contract much when exposed to heat. This makes it a good choice for applications where the ceramic will be exposed to temperature changes.

Due to its excellent properties, HPA is used in a variety of ceramic applications. These applications include:

  • Substrates for semiconductor devices: HPA is used as a substrate for semiconductor devices, such as light-emitting diodes (LEDs) and transistors. The high purity and hardness of HPA make it a good choice for this application.
  • Refractory materials: HPA is used in refractory materials, which are materials that can withstand high temperatures. HPA is used in applications such as kiln linings and furnace linings.
  • Electrical insulators: HPA is used as an electrical insulator in applications such as circuit boards and capacitors. The high dielectric strength of HPA makes it a good choice for this application.
  • Biomedical applications: HPA is used in biomedical applications, such as artificial joints and implants. The high biocompatibility of HPA makes it a good choice for these applications.

HPA is a versatile material with a wide range of applications. Its excellent properties make it a great fit for the ceramics industry.

Want to find out more about Alpha HPA products? Reach out to our Sales & Marketing Manager Derek Bogaert to set up a discovery call with Alpha HPA to discover more: hello@alphahpa.com.au

Recent news

- Nov 16, 2023

Alpha HPA's Spherical Gamma Alumina: Catalyst Magic Unveiled!

Welcome to the world of catalysts and the secret ingredient that’s transforming reactions across industries – Alpha HPA’s Spherical Gamma Alumina (γ-Al2O3). Firstly, what is a catalyst? Catalysts are substances that accelerate chemical reactions without being consumed in the process. ...
Read more
- Oct 27, 2023

Alpha HPA commends Australia's $2 billion critical boost

Click here for photos. Click here for AFR article. Click here for ABC Radio National Drive media interview. Click here for Sky News television interview.   Alpha HPA, a leading Queensland-based provider of low carbon ultra-high purity aluminium materials, commends ...
Read more
- Sep 21, 2023

Alpha HPA’s sustainable approach to HPA production

While there are many manufacturing processes of HPA, the most common is the hydrolysis of aluminium alkoxide. This process involves synthesising aluminium metal and alcohol to produce high purity aluminium alkoxide. HPA is then procured by calcination. Other existing processes ...
Read more

Get the latest news

To find out more about our products or investment opportunities, simply enter your email address below.