Ultra-fast high-temperature sintering method 10 seconds to quickly fire ceramics-can produce delicate 3D printed structures

3D-printed ceramics will provide a significant increase in demand for additive manufacturing equipment and ceramic materials. This trend is increasingly important in the field of engineering ceramics, as well as advanced ceramics.

For ceramic part production, there are higher demands for process integration and ceramic 3D printing technology. Yet, traditional ceramic part manufacturing can be more difficult.

Here are five major reasons to use 3D printing technology for the manufacturing of ceramic parts.

You can create a very lightweight structure.

It is possible to replace many of the structures that used multiple components by using one part in the function set. This saves you assembly cost and enhances product performance.

Produce personalized parts, including dentures and implants for orthopedics. ;

This opens up new opportunities in logistics, spare parts supply and production on-demand.

Avoid expensive moulds by creating small-scale ceramic components.

Figure 1. 3D-printed lightweight ceramic container. Ceramic sensor 3D printed from lightweight ceramic; b.

Technology that is suitable for 3D printing in ceramic additive manufacture falls into one of two groups. Two types of technologies are available: one is that of simultaneous material shaping and densification. These technologies can be used to make ceramic green embryos. They require heat treatment to achieve the final product.

First, additive manufacturing processes use a higher temperature gradient. This causes higher thermal stress which can cause damage to ceramic arts. Due to the inclusion of multiple 3D printing techniques, the complexity of technology application and quality management in the ceramic industry increases.

The issues that can arise from heat treating 3D printed ceramic components are in principle similar to problems that occur with traditional production techniques. Optimizing heat treatment may be harder. The characteristics of additive manufacturing technology mean that cracking or delamination is possible during degreasing. This can be due to high levels of binder and interlayer adhesion. 3D printing involves more intricate sintering than in conventional moulding. This may result in higher shrinkage or warpage. The deformation can be more dangerous than anisotropic shrinkage.

3D printing technology is known for its ability to make complex structures. It is important to understand how to solve the issues of heating ceramic pieces 3D printed from ceramics, in order for ceramic producers to benefit from 3D printing technology.

University of Maryland scientists have improved a traditional manufacturing process that dates back 26,000 years to make ceramics in fuel cells and solid-state batteries.

It is widely used for batteries, electronic devices and in extreme environments. Ceramic sintering (a part of the traditional sintering process to create ceramic objects), can often take many hours. Maryland scientists developed UHS, an ultrafast high heat sintering technique that is fast enough to meet current ceramics’ needs.

Illustration: UHS sintering technique

enables structure to be created

Reports indicate that the older rapid sintering systems have some limitations. They are susceptible to low temperature, long time periods, increased energy consumption, as well as costly repairs.

Maryland team has developed a high-temperature sintering technique that provides uniform temperature distribution, heating and cooling at very high rates. The sintering temperature can reach 3000 Celsius. Together, these two processes require less than 10 seconds. That’s more than 1,000 times faster compared to traditional furnace interfacing methods.

This invention sandwiched the ceramic precursor green body of a compacted ceramic powder between two carbon bars. Through radiation and conduction it heats quickly the particles, which causes them to crystallize rapidly. Any ceramic material that is sufficiently hot can be sintered.

Researchers said this means that ultrafast high temperature sintering has two meanings.

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