XADO is the only technology in the world of in-place repair of machines, assemblies and mechanisms which allows reconditioning them during the standard mode of operation. The essence and key link of XADO technology is a discovery of REVITALIZATION , which not only turned over the society's idea about repair in the traditional sense of this notion, but opened new opportunities of operation of both machines and mechanisms.

What is revitalization?

The word “revitalization” (from Latin “vita” – life) literally means “returning of life”. The discovery of the revitalization phenomenon is based on unique physical-chemical processes, which occur in the friction zone under certain conditions.
In short, their essence consists in the following: during mechanism operation the loads appear at friction couples. At extremely heavy loads, excess energy aimed at destruction is released. But if we introduce a unique building material – a revitalizant – into the friction zone, then such conditions are created in the overloaded zone when, with respect to energy, it pays to build something new instead of destructing the old things because the sign changes from “minus” to “plus”. This means that energy of destruction changes to energy of creation!

Let us examine these processes in detail. How does wear usually occur?
The picture schematically shows a flaw in one of the friction surfaces. In this case, it is a scratch (in the cross-section) made along the axis of motion of the surfaces.
Attention! The highlighted zone is a zone of abnormal surface activity. Here the metal atoms have non-compensated double bonds, i.e. such atoms if force is applied can be easily “captured”, “swung” and torn away from the matrix.
Imagine a tree growing at the edge of a ravine. Under the action of water and wind, the soil breaks up step by step stripping the roots. The tree is no more linked fast to the earth and a strong gust of wind would be enough to uproot it.
In simple terms, the same process occurs during surface wear. Atoms are easily dislodged and destruction progresses. Moreover under effect of overloads entire sets of atoms - clusters - can be dislodged. The catastrophic wear starts.
This was always the case until the phenomenon of REVITALIZATION , was discovered, when scientists found that there is an option of reversing the process of wear and restoring the worn surface! It turned out that such conditions can be created when the part builds up its weight and size and restores its initial dimensions.
To create such favorable conditions, it is necessary to introduce a specially synthesized substance – revitalizant ХАDО into the friction zone. It contains the building material for the future surface and a unique energy activator, which allows channelling the excess friction energy to create a new matrix – a new surface.

Where is revitalization initiated?
How does the surface grow?

Revitalization starts in the overloaded zone (zone of heaviest wear), since it is exactly this location where there is sufficiently of excess energy to initiate a new process and where metal atoms have the greatest number of free (non-compensated) bonds.
These bonds, like magnets, capture and hold the building material – the revitalizant, in exactly wear locations. When loads appear the energy activator channels excess energy to build a new matrix. Hence, a new coating is formed on the old base.
In several minutes after the beginning of revitalization a cermet (ceramic\metallic) patch appears on the scratch. Highlighted zone, zone of abnormal activity, has disappeared. The energy processes have stabilized and surface growth stopped.
At the same time mutual diffusion of two substances (metal and cermet) takes place to finalize the process of new coating forming, to cement and thereby, finally, to eliminate the dangerous flaw. In time the new coating holds on more and more firmly.

How is surface growth controlled?
Let us examine a part with a microscope. Even the smoothest surface, at considerable magnification, looks uneven and represents a continuous series of “peaks” and “hollows”. Little by little wear attacks weak locations, dislodges and “washes out” metal atoms, bringing them to chips, making the “hollows” deeper and deeper. In such a way 100% wear occurs not when the part disintegrates into dust, as some mistakenly think, but when the peaks start to abrade. As long as these peaks-beacons exist which “remember” the initial size of the part, the last one can be restored by revitalization.
By the way, due to this fact it follows that the part shall never gather in size more than required. As soon as the hollows and the peaks become equal, the energy conditions required for revitalizing disappear and the system becomes stabilized.
The building material left unused shall immediately start reacting as soon as the surface “signals” about the appearance of a zone of abnormal surface activity (wear).

How big can the build-up be?
The consumer originality of ХАDО revitalizant is that we are not pointing to mythical atom layers, the revitalizant will add actual microns in the pump element, “one-hundredths” in the engine and “one-tenths” on differential wheels.

What does revitalization give?

First, a new coating is formed on friction couple surfaces: the part increases in size getting back those “one-hundredths” and “one-tenths”, lost previously, “gone” into oil during operation. This means REPAIR. .
Second, the coating obtained has unique characteristics: extreme hardness, high corrosion resistance and low surface roughness. Therefore, it is guaranteed that revitalized part will serve 2 – 4 times longer. This means WEAR PROTECTION. The conclusion is obvious: due to revitalization, you get a reconditioned part which, as to its performance, is superior to a new one.

Main characteristics of surface part before and after revitalization:

Characteristics	Before revitalization	After revitalization
Microhardness, kg/mm 2	65-280	650-750
Roughness, Ra, micron	0,9-2,1	0,06
Corrosion resistance	low, mild	stably high