What sets apart Silicon Carbide Ceramics?

AIRIX GEAR LABS Presents.........................................

Composite Body armor refers to a composition of ceramic and polymers layers, bound together with epoxy or a similar agent, and either wrapped with abrasion-resistant fabric like 1000D Cordura or sprayed with a polyurea-style coating.

The Ceramic always faces outward, meeting the threat and absorbing the high heat impact, crushing a little, thus preventing spalling.

the poly is the "backer," which adds structural strength and catches the bullet after it has been dramatically slowed down by the ceramic.

There are several constitutions of ceramic that are befitting of the aforementioned role.  Two of the most common are Silicon Carbide Ceramic and Alumina Ceramic.

Silicon Carbide Ceramic is the uncompromising option, but alumina is also a reasonable choice. 

We favor Silicon Carbide in our top o' the line plates because it produces lighter plates....   but could we be giving up performance in going ultralight? 

Nope!

Our testing indicated that Silicon Carbide was better at stopping a wider variety of threats and that superiority is indexed by the following graphs:

Hardness:

We include some other commonly referenced materials for perspective.  You can see that both ceramics are much harder than Stainless Steel, for example.   But Silicon Carbide is right up there with a Sapphire Crystal - this stuff is hard!

 

Flexural Strength at various temperatures:

When Bullets impact a plate, they make a lot of heat, really fast. 

Flexural Strength is the extent to which an object or any material may resist breakage when bent. 

Therefore Flexural strength across temperatures is important in the context of ballistic armor, as extremely high temperatures are generated when those pills impact at 3000fps...

If something is strong at room temp, but weak at high temperature, it won't make a very good ballistic protector.  As you can see in the above, Silicone Carbide performs better than Alumina.  They absorb the first high-heat impact of a ballistic strike, and the alternating layers of UD-UHMWPE support the ceramic.

Boron Carbide is another Ceramic that we are experimenting with, but as of now it is not as resilient against rifle rounds as Silicon Carbide.  It's very light, and very good for IIIA options.

Scientists know high-speed jolts cause ceramic plates to have phase transformations—a phenomenon where a material changes its internal structure such that it is in two or more physical states, like liquid and solid, at the same time.

Silicon Carbide is a beast against multi-hit rifle threats. Silicon-Boron blends will be the future for going even lighter.

 

Density:

A dense material is good at stopping bullets.  :)

 

Modulus of Elasticity

Modulus of elasticity is the measure of the stress–strain relationship on the object, and Young's Modulus shows the mechanical property of a material to withstand the compression or the elongation with respect to its length.   Silicone Carbide is great.

 

The first 20 people who have read this far and email pipe@airixarmor.com to demonstrate that they have nerded out and this is not TLDR will receive a $10 gift card.  Ha!