Page 9 - report P Lemoine feb 2013c
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                                      Y asrec                                 Y fired

                         35                                      35
                         30                                      30
                         25                                      25
                         Frequency  20                          Frequency  20
                         15
                                                                 15
                         10                                      10
                          5                                       5
                          0                                       0
                            0  2   4   6  8  10  12  14  More      0   2   4  6   8  10  12  14  More
                                         H, Gpa                                  H, Gpa


                                       Y N2                                   Y acid

                         35                                      35
                         30                                      30
                         25                                      25
                        Frequency  20                           Frequency  20
                                                                 15
                         15
                         10                                      10
                          5                                       5
                          0                                       0
                            0  2   4   6  8  10  12  14  More       0  2   4  6   8  10  12  14  More
                                         H, Gpa                                  H, Gpa


                                                         no Yasrec

                                              35
                                              30
                                              25
                                             Frequency  20

                                              15
                                              10
                                               5
                                               0
                                                0   2  4   6   8  10  12  14  More
                                                              H, Gpa


                Figure 4: Hardness (H) frequency histograms for random positioning for Y as rec, Y

                   fired, Y acid, Y N2 and no Y as rec. The X axis represents  the value, in GPa.











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